range.primitive: Add missing rparen to the docs

Add hashing pointers
Add documentation for the hash function
2018-03-27 05:19:14 +02:00 · 2018-03-27 05:18:46 +02:00 · 2018-03-27 05:09:44 +02:00 · 2018-03-27 05:09:22 +02:00 · 2018-03-27 05:09:09 +02:00 · 2018-03-27 05:08:55 +02:00
51 changed files with 5379 additions and 1553 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,9 +1,12 @@
 # Binary
 *.[oa]
 *.exe
+*.lib

 # D
 .dub
+dub.selections.json
+
 __test__*__
 __test__*__.core
 /tanya-test-*
--- a/.travis.yml
+++ b/.travis.yml
@ -7,9 +7,10 @@ os:
 language: d

 d:
+  - dmd-2.079.0
+  - dmd-2.078.3
+  - dmd-2.077.1
  - dmd-2.076.1
-  - dmd-2.075.1
-  - dmd-2.074.1

 env: 
  matrix:
@ -22,7 +23,7 @@ addons:
      - gcc-multilib

 before_script:
-  - if [ "$PS1" = '(dmd-2.076.1)' ]; then
+  - if [ "$PS1" = '(dmd-2.079.0)' ]; then
      export UNITTEST="unittest-cov";
    fi

--- a/README.md
+++ b/README.md
@ -12,10 +12,9 @@ Tanya is a general purpose library for D programming language.
 Its aim is to simplify the manual memory management in D and to provide a
 guarantee with @nogc attribute that there are no hidden allocations on the
 Garbage Collector heap. Everything in the library is usable in @nogc code.
-Tanya extends Phobos functionality and provides alternative implementations for
-data structures and utilities that depend on the Garbage Collector in Phobos.
+Tanya provides data structures and utilities to facilitate painless systems
+programming in D.

-* [Bug tracker](https://issues.caraus.io/projects/tanya/issues)
 * [API Documentation](https://docs.caraus.io/tanya)
 * [Contribution guidelines](CONTRIBUTING.md)

@ -24,14 +23,16 @@ data structures and utilities that depend on the Garbage Collector in Phobos.

 Tanya consists of the following packages and (top-level) modules:

+* `algorithm`: Collection of generic algorithms.
 * `async`: Event loop (epoll, kqueue and IOCP).
 * `container`: Queue, Array, Singly and doubly linked lists, Buffers, UTF-8
-string, Hash set.
+string, Hash table.
 * `conv`: This module provides functions for converting between different
 types.
 * `encoding`: This package provides tools to work with text encodings.
 * `exception`: Common exceptions and errors.
 * `format`: Formatting and conversion functions.
+* `hash`: Hash algorithms.
 * `math`: Arbitrary precision integer and a set of functions.
 * `memory`: Tools for manual memory management (allocators, smart pointers).
 * `meta`: Template metaprogramming. This package contains utilities to acquire
@ -49,7 +50,10 @@ After finishing the new socket implementation will land in the `net` package and
 ones.


-## Basic usage
+## NogcD
+
+To achieve programming without the Garbage Collection tanya uses a subset of D:
+NogcD.

 ### Allocators

@ -113,7 +117,7 @@ catch (Exception e)
 }
 ```

-### Containers
+### Built-in array operations and containers

 Arrays are commonly used in programming. D's built-in arrays often rely on the
 GC. It is inconvenient to change their size, reserve memory for future use and
@ -143,40 +147,75 @@ int i = arr[7]; // Access 8th element.
 There are more containers in the `tanya.container` package.


+### Immutability
+
+Immutability doesn't play nice with manual memory management since the
+allocated storage should be initialized (mutated) and then released (mutated).
+`immutable` is used only for non-local immutable declarations (that are
+evaluated at compile time), static immutable data, strings (`immutable(char)[]`,
+`immutable(wchar)[]` and `immutable(dchar)[]`).
+
+
+### Unsupported features
+
+The following features depend on GC and aren't supported:
+
+- `lazy` parameters (allocate a closure which is evaluated when then the
+parameter is used)
+
+- `synchronized` blocks
+
+
 ## Development

 ### Supported compilers

 | DMD     | GCC       |
-|:-------:|:--------------:|
-| 2.076.1 | *gdc-5* branch |
-| 2.075.1 |                |
-| 2.074.1 |                |
+|:-------:|:---------:|
+| 2.079.0 | *master*  |
+| 2.078.3 |           |
+| 2.077.1 |           |
+| 2.076.1 |           |

 ### Current status

 Following modules are under development:

 | Feature    | Branch    | Build status                                                                                                                                                                                                                                                                                  |
-|----------|:---------:|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| BitArray | bitvector | [![bitvector](https://travis-ci.org/caraus-ecms/tanya.svg?branch=bitvector)](https://travis-ci.org/caraus-ecms/tanya) [![bitvector](https://ci.appveyor.com/api/projects/status/djkmverdfsylc7ti/branch/bitvector?svg=true)](https://ci.appveyor.com/project/belka-ew/tanya/branch/bitvector) |
-| TLS      | crypto    | [![crypto](https://travis-ci.org/caraus-ecms/tanya.svg?branch=crypto)](https://travis-ci.org/caraus-ecms/tanya) [![crypto](https://ci.appveyor.com/api/projects/status/djkmverdfsylc7ti/branch/crypto?svg=true)](https://ci.appveyor.com/project/belka-ew/tanya/branch/crypto)                |
-| File IO  | io        | [![io](https://travis-ci.org/caraus-ecms/tanya.svg?branch=io)](https://travis-ci.org/caraus-ecms/tanya) [![io](https://ci.appveyor.com/api/projects/status/djkmverdfsylc7ti/branch/io?svg=true)](https://ci.appveyor.com/project/belka-ew/tanya/branch/io)                                    |
+|------------|:---------:|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| Hash table | bitvector | [![bitvector](https://travis-ci.org/caraus-ecms/tanya.svg?branch=bitvector)](https://travis-ci.org/caraus-ecms/tanya) [![bitvector](https://ci.appveyor.com/api/projects/status/djkmverdfsylc7ti/branch/bitvector?svg=true)](https://ci.appveyor.com/project/belka-ew/tanya/branch/bitvector) |

 ### Release management

-3-week release cycle.
+Tanya is still under active development and it isn't possible to provide great
+backwards-compatibility at this stage. This won't change until 1.0.0. Almost
+every release contains new features or API changes alongside bug fixes. Thus:

-Deprecated features are removed after one release (in approximately 6 weeks after deprecating).
+- Patch releases add new functionality and bug fixes in a backwards-compatible
+manner
+
+- Minor releases contain API breakages
+
+- Major release number is always the same: `0.x.x`
+
+Deprecated functionality is where possible marked as such before getting
+removed. It is left in the library for one release: If 0.8.1 deprecates some
+feature, it is removed in the next release: 0.9.0.

 ## Further characteristics

-* Tanya is a native D library without any external dependencies.
+- Tanya is a native D library

-* Tanya is cross-platform. The development happens on a 64-bit Linux, but it
-is being tested on Windows and FreeBSD as well.
+- Tanya is cross-platform. The development happens on a 64-bit Linux, but it
+is being tested on Windows and FreeBSD as well

-* The library isn't thread-safe yet.
+- Tanya favours generic algorithms therefore there is no auto-decoding. Char
+arrays are handled as any other array type
+
+- The library isn't thread-safe yet
+
+- Complex numbers (`cfloat`, `cdouble`, `creal`, `ifloat`, `idouble`, `ireal`)
+aren't supported


 ## Feedback
--- a/appveyor.yml
+++ b/appveyor.yml
@ -3,24 +3,30 @@ os: Visual Studio 2015

 environment:
  matrix:
+    - DC: dmd
+      DVersion: 2.079.0
+      arch: x64
+    - DC: dmd
+      DVersion: 2.079.0
+      arch: x86
+    - DC: dmd
+      DVersion: 2.078.3
+      arch: x64
+    - DC: dmd
+      DVersion: 2.078.3
+      arch: x86
+    - DC: dmd
+      DVersion: 2.077.1
+      arch: x64
+    - DC: dmd
+      DVersion: 2.077.1
+      arch: x86
    - DC: dmd
      DVersion: 2.076.1
      arch: x64
    - DC: dmd
      DVersion: 2.076.1
      arch: x86
-    - DC: dmd
-      DVersion: 2.075.1
-      arch: x64
-    - DC: dmd
-      DVersion: 2.075.1
-      arch: x86
-    - DC: dmd
-      DVersion: 2.074.1
-      arch: x64
-    - DC: dmd
-      DVersion: 2.074.1
-      arch: x86

 skip_tags: true

--- a/arch/x64/linux/math/log.S
+++ b/arch/x64/linux/math/log.S
@ -2,10 +2,10 @@


 // logl.
-	.globl _D5tanya4math8nbtheory2lnFNaNbNiNfeZe
-	.type _D5tanya4math8nbtheory2lnFNaNbNiNfeZe, @function
+	.globl _D5tanya4math8nbtheory9__T2lnTeZ2lnFNaNbNiNfeZe
+	.type _D5tanya4math8nbtheory9__T2lnTeZ2lnFNaNbNiNfeZe, @function

-_D5tanya4math8nbtheory2lnFNaNbNiNfeZe:
+_D5tanya4math8nbtheory9__T2lnTeZ2lnFNaNbNiNfeZe:
 	fldln2 // Put lb(e) onto the FPU stack
 	fldt 8(%rsp) // Put the argument onto the FPU stack
 	fyl2x // %st1 * lb(%st0)
@ -13,10 +13,10 @@ _D5tanya4math8nbtheory2lnFNaNbNiNfeZe:


 // log.
-	.globl _D5tanya4math8nbtheory2lnFNaNbNiNfdZd
-	.type _D5tanya4math8nbtheory2lnFNaNbNiNfdZd, @function
+	.globl _D5tanya4math8nbtheory9__T2lnTdZ2lnFNaNbNiNfdZd
+	.type _D5tanya4math8nbtheory9__T2lnTdZ2lnFNaNbNiNfdZd, @function

-_D5tanya4math8nbtheory2lnFNaNbNiNfdZd:
+_D5tanya4math8nbtheory9__T2lnTdZ2lnFNaNbNiNfdZd:
 	movsd %xmm0, -8(%rsp) // Put the argument onto the stack

 	fldln2 // Put lb(e) onto the FPU stack
@ -31,10 +31,10 @@ _D5tanya4math8nbtheory2lnFNaNbNiNfdZd:


 // logf.
-	.globl _D5tanya4math8nbtheory2lnFNaNbNiNffZf
-	.type _D5tanya4math8nbtheory2lnFNaNbNiNffZf, @function
+	.globl _D5tanya4math8nbtheory9__T2lnTfZ2lnFNaNbNiNffZf
+	.type _D5tanya4math8nbtheory9__T2lnTfZ2lnFNaNbNiNffZf, @function

-_D5tanya4math8nbtheory2lnFNaNbNiNffZf:
+_D5tanya4math8nbtheory9__T2lnTfZ2lnFNaNbNiNffZf:
 	movss %xmm0, -4(%rsp) // Put the argument onto the stack

 	fldln2 // Put lb(e) onto the FPU stack
--- a/arch/x64/linux/memory/fill.S
+++ b/arch/x64/linux/memory/fill.S
@ -37,6 +37,11 @@ _D5tanya6memory2op10fillMemoryFNaNbNiAvmZv:

 		mov %rsi,  %r8

+		// If the length is less than the number of misaligned bytes,
+		// write one byte at a time and exit
+		cmp %rax, %rcx
+		jg aligned_1
+
 	naligned:
 		mov %dl, (%r8) // Write a byte

--- a/dub.json
+++ b/dub.json
@ -1,18 +1,27 @@
 {
 	"name": "tanya",
-	"description": "General purpose, @nogc library. Containers, networking, metaprogramming, memory management, utilities",
+	"description": "@nogc library. Containers, networking, metaprogramming, memory management, utilities",
 	"license": "MPL-2.0",
-	"copyright": "(c) Eugene Wissner <info@caraus.de>",
+	"copyright": "© Eugene Wissner <info@caraus.de>",
 	"authors": [
 		"Eugene Wissner"
 	],

 	"targetType": "library",

+	"dependencies-linux": {
+		"mir-linux-kernel": "~>1.0.0"
+	},
+
 	"configurations": [
 		{
 			"name": "library",
-			"targetType": "library",
+			"targetType": "staticLibrary",
+			"versions": ["TanyaPhobos"]
+		},
+		{
+			"name": "dynamic",
+			"targetType": "dynamicLibrary",
 			"versions": ["TanyaPhobos"]
 		},
 		{
@ -23,5 +32,7 @@
 			"lflags": ["arch/tanya.a"],
 			"versions": ["TanyaNative"]
 		}
-	]
+	],
+
+	"libs-windows": ["advapi32"]
 }
--- a/source/tanya/algorithm/mutation.d
+++ b/source/tanya/algorithm/mutation.d
@ -0,0 +1,275 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Algorithms that modify its arguments.
+ *
+ * Copyright: Eugene Wissner 2017-2018.
+ * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
+ *                  Mozilla Public License, v. 2.0).
+ * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
+ * Source: $(LINK2 https://github.com/caraus-ecms/tanya/blob/master/source/tanya/algorithm/mutation.d,
+ *                 tanya/algorithm/mutation.d)
+ */
+module tanya.algorithm.mutation;
+
+import tanya.memory.op;
+import tanya.meta.trait;
+
+private void deinitialize(bool zero, T)(ref T value)
+{
+    static if (is(T == U[S], U, size_t S))
+    {
+        foreach (ref e; value)
+        {
+            deinitialize!zero(e);
+        }
+    }
+    else
+    {
+        static if (isNested!T)
+        {
+            // Don't override the context pointer.
+            enum size_t size = T.sizeof - (void*).sizeof;
+        }
+        else
+        {
+            enum size_t size = T.sizeof;
+        }
+        static if (zero)
+        {
+            fill!0((cast(void*) &value)[0 .. size]);
+        }
+        else
+        {
+            copy(typeid(T).initializer()[0 .. size], (&value)[0 .. 1]);
+        }
+    }
+}
+
+/**
+ * Moves $(D_PARAM source) into $(D_PARAM target) assuming that
+ * $(D_PARAM target) isn't initialized.
+ *
+ * Moving the $(D_PARAM source) copies it into the $(D_PARAM target) and places
+ * the $(D_PARAM source) into a valid but unspecified state, which means that
+ * after moving $(D_PARAM source) can be destroyed or assigned a new value, but
+ * accessing it yields an unspecified value. No postblits or destructors are
+ * called. If the $(D_PARAM target) should be destroyed before, use
+ * $(D_PSYMBOL move).
+ *
+ * $(D_PARAM source) and $(D_PARAM target) must be different objects.
+ *
+ * Params:
+ *  T      = Object type.
+ *  source = Source object.
+ *  target = Target object.
+ *
+ * See_Also: $(D_PSYMBOL move),
+ *           $(D_PSYMBOL hasElaborateCopyConstructor),
+ *           $(D_PSYMBOL hasElaborateDestructor).
+ *
+ * Precondition: `&source !is &target`.
+ */
+void moveEmplace(T)(ref T source, ref T target) @system
+in
+{
+    assert(&source !is &target, "Source and target must be different");
+}
+do
+{
+    static if (is(T == struct) || isStaticArray!T)
+    {
+        copy((&source)[0 .. 1], (&target)[0 .. 1]);
+
+        static if (hasElaborateCopyConstructor!T || hasElaborateDestructor!T)
+        {
+            if (typeid(T).initializer().ptr is null)
+            {
+                deinitialize!true(source);
+            }
+            else
+            {
+                deinitialize!false(source);
+            }
+        }
+    }
+    else
+    {
+        target = source;
+    }
+}
+
+///
+@nogc nothrow pure @system unittest
+{
+    static struct S
+    {
+        int member = 5;
+
+        this(this) @nogc nothrow pure @safe
+        {
+            assert(false);
+        }
+    }
+    S source, target = void;
+    moveEmplace(source, target);
+    assert(target.member == 5);
+
+    int x1 = 5, x2;
+    moveEmplace(x1, x2);
+    assert(x2 == 5);
+}
+
+// Is pure.
+@nogc nothrow pure @system unittest
+{
+    struct S
+    {
+        this(this)
+        {
+        }
+    }
+    S source, target = void;
+    static assert(is(typeof({ moveEmplace(source, target); })));
+}
+
+// Moves nested.
+@nogc nothrow pure @system unittest
+{
+    struct Nested
+    {
+        void method() @nogc nothrow pure @safe
+        {
+        }
+    }
+    Nested source, target = void;
+    moveEmplace(source, target);
+    assert(source == target);
+}
+
+// Emplaces static arrays.
+@nogc nothrow pure @system unittest
+{
+    static struct S
+    {
+        size_t member;
+        this(size_t i) @nogc nothrow pure @safe
+        {
+            this.member = i;
+        }
+        ~this() @nogc nothrow pure @safe
+        {
+        }
+    }
+    S[2] source = [ S(5), S(5) ], target = void;
+    moveEmplace(source, target);
+    assert(source[0].member == 0);
+    assert(target[0].member == 5);
+    assert(source[1].member == 0);
+    assert(target[1].member == 5);
+}
+
+/**
+ * Moves $(D_PARAM source) into $(D_PARAM target) assuming that
+ * $(D_PARAM target) isn't initialized.
+ *
+ * Moving the $(D_PARAM source) copies it into the $(D_PARAM target) and places
+ * the $(D_PARAM source) into a valid but unspecified state, which means that
+ * after moving $(D_PARAM source) can be destroyed or assigned a new value, but
+ * accessing it yields an unspecified value. $(D_PARAM target) is destroyed before
+ * the new value is assigned. If $(D_PARAM target) isn't initialized and
+ * therefore shouldn't be destroyed, $(D_PSYMBOL moveEmplace) can be used.
+ *
+ * If $(D_PARAM target) isn't specified, $(D_PSYMBOL move) returns the source
+ * as rvalue without calling its copy constructor or destructor.
+ *
+ * $(D_PARAM source) and $(D_PARAM target) are the same object,
+ * $(D_PSYMBOL move) does nothing.
+ *
+ * Params:
+ *  T      = Object type.
+ *  source = Source object.
+ *  target = Target object.
+ *
+ * See_Also: $(D_PSYMBOL moveEmplace).
+ */
+void move(T)(ref T source, ref T target)
+{
+    if ((() @trusted => &source is &target)())
+    {
+        return;
+    }
+    static if (hasElaborateDestructor!T)
+    {
+        target.__xdtor();
+    }
+    (() @trusted => moveEmplace(source, target))();
+}
+
+/// ditto
+T move(T)(ref T source) @trusted
+{
+    T target = void;
+    moveEmplace(source, target);
+    return target;
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    static struct S
+    {
+        int member = 5;
+
+        this(this) @nogc nothrow pure @safe
+        {
+            assert(false);
+        }
+    }
+    S source, target = void;
+    move(source, target);
+    assert(target.member == 5);
+    assert(move(target).member == 5);
+
+    int x1 = 5, x2;
+    move(x1, x2);
+    assert(x2 == 5);
+    assert(move(x2) == 5);
+}
+
+// Moves if source is target.
+@nogc nothrow pure @safe unittest
+{
+    int x = 5;
+    move(x, x);
+    assert(x == 5);
+}
+
+/**
+ * Exchanges the values of $(D_PARAM a) and $(D_PARAM b).
+ *
+ * $(D_PSYMBOL swap) moves the contents of $(D_PARAM a) and $(D_PARAM b)
+ * without calling its postblits or destructors.
+ *
+ * Params:
+ *  a = The first object.
+ *  b = The second object.
+ */
+void swap(T)(ref T a, ref T b) @trusted
+{
+    T tmp = void;
+    moveEmplace(a, tmp);
+    moveEmplace(b, a);
+    moveEmplace(tmp, b);
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    int a = 3, b = 5;
+    swap(a, b);
+    assert(a == 5);
+    assert(b == 3);
+}
--- a/source/tanya/algorithm/package.d
+++ b/source/tanya/algorithm/package.d
@ -3,15 +3,15 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 /**
- * This package contains formatting and conversion functions.
+ * Collection of generic algorithms.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
- * Source: $(LINK2 https://github.com/caraus-ecms/tanya/blob/master/source/tanya/format/package.d,
- *                 tanya/format/package.d)
+ * Source: $(LINK2 https://github.com/caraus-ecms/tanya/blob/master/source/tanya/algorithm/package.d,
+ *                 tanya/algorithm/package.d)
 */
-module tanya.format;
+module tanya.algorithm;

-public import tanya.format.conv;
+public import tanya.algorithm.mutation;
--- a/source/tanya/async/event/epoll.d
+++ b/source/tanya/async/event/epoll.d
@ -5,7 +5,7 @@
 /**
 * Event loop implementation for Linux.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -31,7 +31,6 @@ import tanya.async.transport;
 import tanya.async.watcher;
 import tanya.container.array;
 import tanya.memory;
-import tanya.memory.mmappool;
 import tanya.network.socket;

 extern (C) nothrow @nogc
@ -56,7 +55,7 @@ final class EpollLoop : SelectorLoop
            throw defaultAllocator.make!BadLoopException("epoll initialization failed");
        }
        super();
-        events = Array!epoll_event(maxEvents, MmapPool.instance);
+        events = Array!epoll_event(maxEvents);
    }

    /**
@ -163,7 +162,7 @@ final class EpollLoop : SelectorLoop
                }
                else if (transport.output.length)
                {
-                    pendings.enqueue(transport);
+                    pendings.insertBack(transport);
                }
            }
            if (events[i].events & EPOLLOUT)
--- a/source/tanya/async/event/iocp.d
+++ b/source/tanya/async/event/iocp.d
@ -5,7 +5,7 @@
 /**
 * Event loop implementation for Windows.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -27,7 +27,6 @@ import tanya.async.transport;
 import tanya.async.watcher;
 import tanya.container.buffer;
 import tanya.memory;
-import tanya.memory.mmappool;
 import tanya.network.socket;
 import tanya.sys.windows.winbase;

@ -57,8 +56,8 @@ final class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    this(OverlappedConnectedSocket socket) @nogc
    {
        super(socket);
-        output = ReadBuffer!ubyte(8192, 1024, MmapPool.instance);
-        input = WriteBuffer!ubyte(8192, MmapPool.instance);
+        output = ReadBuffer!ubyte(8192, 1024);
+        input = WriteBuffer!ubyte(8192);
        active = true;
    }

@ -72,7 +71,7 @@ final class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    {
        assert(socket !is null);
    }
-    body
+    do
    {
        return cast(OverlappedConnectedSocket) socket_;
    }
@ -117,8 +116,7 @@ final class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    /**
     * Switches the protocol.
     *
-     * The protocol is deallocated by the event loop, it should currently be
-     * allocated with $(D_PSYMBOL MmapPool).
+     * The protocol is deallocated by the event loop.
     *
     * Params:
     *  protocol = Application protocol.
@ -130,7 +128,7 @@ final class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    {
        assert(protocol !is null);
    }
-    body
+    do
    {
        protocol_ = protocol;
    }
@ -150,20 +148,20 @@ final class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
                SocketState overlapped;
                try
                {
-                    overlapped = MmapPool.instance.make!SocketState;
+                    overlapped = defaultAllocator.make!SocketState;
                    socket.beginSend(input[], overlapped);
                }
                catch (SocketException e)
                {
-                    MmapPool.instance.dispose(overlapped);
-                    MmapPool.instance.dispose(e);
+                    defaultAllocator.dispose(overlapped);
+                    defaultAllocator.dispose(e);
                }
            }
        }
        else
        {
            protocol.disconnected(exception);
-            MmapPool.instance.dispose(protocol_);
+            defaultAllocator.dispose(protocol_);
            defaultAllocator.dispose(exception);
            active = false;
        }
@ -221,12 +219,12 @@ final class IOCPLoop : Loop

            try
            {
-                overlapped = MmapPool.instance.make!SocketState;
+                overlapped = defaultAllocator.make!SocketState;
                socket.beginAccept(overlapped);
            }
            catch (SocketException e)
            {
-                MmapPool.instance.dispose(overlapped);
+                defaultAllocator.dispose(overlapped);
                defaultAllocator.dispose(e);
                return false;
            }
@ -250,12 +248,12 @@ final class IOCPLoop : Loop
            {
                try
                {
-                    overlapped = MmapPool.instance.make!SocketState;
+                    overlapped = defaultAllocator.make!SocketState;
                    transport.socket.beginReceive(transport.output[], overlapped);
                }
                catch (SocketException e)
                {
-                    MmapPool.instance.dispose(overlapped);
+                    defaultAllocator.dispose(overlapped);
                    defaultAllocator.dispose(e);
                    return false;
                }
@ -270,12 +268,12 @@ final class IOCPLoop : Loop
    {
        assert(transport !is null);
    }
-    body
+    do
    {
        transport.socket.shutdown();
        defaultAllocator.dispose(transport.socket);
        transport.exception = exception;
-        pendings.enqueue(transport);
+        pendings.insertBack(transport);
    }

    /**
@ -298,11 +296,12 @@ final class IOCPLoop : Loop
            return; // Timeout
        }

-        auto overlapped = (cast(SocketState) ((cast(void*) overlap) - 8));
+        enum size_t offset = size_t.sizeof * 2;
+        auto overlapped = cast(SocketState) ((cast(void*) overlap) - offset);
        assert(overlapped !is null);
        scope (failure)
        {
-            MmapPool.instance.dispose(overlapped);
+            defaultAllocator.dispose(overlapped);
        }

        switch (overlapped.event)
@ -315,13 +314,13 @@ final class IOCPLoop : Loop
                assert(listener !is null);

                auto socket = listener.endAccept(overlapped);
-                auto transport = MmapPool.instance.make!StreamTransport(socket);
+                auto transport = defaultAllocator.make!StreamTransport(socket);

-                connection.incoming.enqueue(transport);
+                connection.incoming.insertBack(transport);

                reify(transport, EventMask(Event.none), EventMask(Event.read, Event.write));

-                pendings.enqueue(connection);
+                pendings.insertBack(connection);
                listener.beginAccept(overlapped);
                break;
            case OverlappedSocketEvent.read:
@ -330,8 +329,8 @@ final class IOCPLoop : Loop

                if (!transport.active)
                {
-                    MmapPool.instance.dispose(transport);
-                    MmapPool.instance.dispose(overlapped);
+                    defaultAllocator.dispose(transport);
+                    defaultAllocator.dispose(overlapped);
                    return;
                }

@ -361,7 +360,7 @@ final class IOCPLoop : Loop
                    {
                        transport.socket.beginReceive(transport.output[], overlapped);
                    }
-                    pendings.enqueue(transport);
+                    pendings.insertBack(transport);
                }
                break;
            case OverlappedSocketEvent.write:
--- a/source/tanya/async/event/kqueue.d
+++ b/source/tanya/async/event/kqueue.d
@ -5,7 +5,7 @@
 /*
 * Event loop implementation for *BSD.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -59,7 +59,6 @@ import tanya.async.transport;
 import tanya.async.watcher;
 import tanya.container.array;
 import tanya.memory;
-import tanya.memory.mmappool;
 import tanya.network.socket;

 void EV_SET(kevent_t* kevp, typeof(kevent_t.tupleof) args) pure nothrow @nogc
@ -146,8 +145,8 @@ final class KqueueLoop : SelectorLoop
            throw make!BadLoopException(defaultAllocator,
                                        "kqueue initialization failed");
        }
-        events = Array!kevent_t(64, MmapPool.instance);
-        changes = Array!kevent_t(64, MmapPool.instance);
+        events = Array!kevent_t(64);
+        changes = Array!kevent_t(64);
    }

    /**
@ -280,7 +279,7 @@ final class KqueueLoop : SelectorLoop
                }
                else if (transport.output.length)
                {
-                    pendings.enqueue(transport);
+                    pendings.insertBack(transport);
                }
            }
            else if (events[i].filter == EVFILT_WRITE)
--- a/source/tanya/async/event/selector.d
+++ b/source/tanya/async/event/selector.d
@ -5,7 +5,7 @@
 /*
 * This module contains base implementations for reactor event loops.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -26,7 +26,6 @@ import tanya.async.watcher;
 import tanya.container.array;
 import tanya.container.buffer;
 import tanya.memory;
-import tanya.memory.mmappool;
 import tanya.network.socket;

 /**
@ -61,12 +60,12 @@ package class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    {
        assert(loop !is null);
    }
-    body
+    do
    {
        super(socket);
        this.loop = loop;
-        output = ReadBuffer!ubyte(8192, 1024, MmapPool.instance);
-        input = WriteBuffer!ubyte(8192, MmapPool.instance);
+        output = ReadBuffer!ubyte(8192, 1024);
+        input = WriteBuffer!ubyte(8192);
        active = true;
    }

@ -80,7 +79,7 @@ package class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    {
        assert(socket !is null);
    }
-    body
+    do
    {
        return cast(ConnectedSocket) socket_;
    }
@ -91,7 +90,7 @@ package class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    {
        assert(socket !is null);
    }
-    body
+    do
    {
        socket_ = socket;
    }
@ -107,8 +106,7 @@ package class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    /**
     * Switches the protocol.
     *
-     * The protocol is deallocated by the event loop, it should currently be
-     * allocated with $(D_PSYMBOL MmapPool).
+     * The protocol is deallocated by the event loop.
     *
     * Params:
     *  protocol = Application protocol.
@ -120,7 +118,7 @@ package class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
    {
        assert(protocol !is null);
    }
-    body
+    do
    {
        protocol_ = protocol;
    }
@ -163,7 +161,7 @@ package class StreamTransport : SocketWatcher, DuplexTransport, SocketTransport
        else
        {
            protocol.disconnected(exception);
-            MmapPool.instance.dispose(protocol_);
+            defaultAllocator.dispose(protocol_);
            defaultAllocator.dispose(exception);
            active = false;
        }
@ -220,18 +218,18 @@ abstract class SelectorLoop : Loop
    this() @nogc
    {
        super();
-        connections = Array!SocketWatcher(maxEvents, MmapPool.instance);
+        this.connections = Array!SocketWatcher(maxEvents);
    }

    ~this() @nogc
    {
-        foreach (ref connection; connections)
+        foreach (ref connection; this.connections[])
        {
            // We want to free only the transports. ConnectionWatcher are
            // created by the user and should be freed by himself.
            if (cast(StreamTransport) connection !is null)
            {
-                MmapPool.instance.dispose(connection);
+                defaultAllocator.dispose(connection);
            }
        }
    }
@ -263,12 +261,12 @@ abstract class SelectorLoop : Loop
    {
        assert(transport !is null);
    }
-    body
+    do
    {
        transport.socket.shutdown();
        defaultAllocator.dispose(transport.socket);
        transport.exception = exception;
-        pendings.enqueue(transport);
+        pendings.insertBack(transport);
    }

    /**
@ -289,7 +287,7 @@ abstract class SelectorLoop : Loop
    {
        assert(transport !is null);
    }
-    body
+    do
    {
        while (transport.input.length && transport.writeReady)
        {
@ -356,7 +354,7 @@ abstract class SelectorLoop : Loop
    {
        assert(connection !is null);
    }
-    body
+    do
    {
        while (true)
        {
@ -387,7 +385,7 @@ abstract class SelectorLoop : Loop
            }
            if (transport is null)
            {
-                transport = MmapPool.instance.make!StreamTransport(this, client);
+                transport = defaultAllocator.make!StreamTransport(this, client);
                connections[client.handle] = transport;
            }
            else
@ -396,12 +394,12 @@ abstract class SelectorLoop : Loop
            }

            reify(transport, EventMask(Event.none), EventMask(Event.read, Event.write));
-            connection.incoming.enqueue(transport);
+            connection.incoming.insertBack(transport);
        }

        if (!connection.incoming.empty)
        {
-            pendings.enqueue(connection);
+            pendings.insertBack(connection);
        }
    }
 }
--- a/source/tanya/async/iocp.d
+++ b/source/tanya/async/iocp.d
@ -7,7 +7,7 @@
 *
 * Note: Available only on Windows.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
--- a/source/tanya/async/loop.d
+++ b/source/tanya/async/loop.d
@ -60,7 +60,7 @@
 * }
 * ---
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -70,15 +70,12 @@
 module tanya.async.loop;

 import core.time;
-import std.algorithm.iteration;
-import std.algorithm.mutation;
 import std.typecons;
 import tanya.async.transport;
 import tanya.async.watcher;
 import tanya.container.buffer;
-import tanya.container.queue;
+import tanya.container.list;
 import tanya.memory;
-import tanya.memory.mmappool;
 import tanya.network.socket;

 version (DisableBackends)
@ -164,7 +161,7 @@ abstract class Loop
    private bool done = true;

    /// Pending watchers.
-    protected Queue!Watcher pendings;
+    protected DList!Watcher pendings;

    /**
     * Returns: Maximal event count can be got at a time
@ -189,7 +186,6 @@ abstract class Loop
     */
    this() @nogc
    {
-        pendings = Queue!Watcher(MmapPool.instance);
    }

    /**
@ -197,9 +193,9 @@ abstract class Loop
     */
    ~this() @nogc
    {
-        foreach (w; pendings)
+        for (; !this.pendings.empty; this.pendings.removeFront())
        {
-            MmapPool.instance.dispose(w);
+            defaultAllocator.dispose(this.pendings.front);
        }
    }

@ -214,9 +210,9 @@ abstract class Loop
            poll();

            // Invoke pendings
-            foreach (ref w; this.pendings)
+            for (; !this.pendings.empty; this.pendings.removeFront())
            {
-                w.invoke();
+                this.pendings.front.invoke();
            }
        }
        while (!this.done);
@ -245,7 +241,7 @@ abstract class Loop
    {
        auto loop = defaultAllocator.make!TestLoop;
        auto watcher = defaultAllocator.make!DummyWatcher;
-        loop.pendings.enqueue(watcher);
+        loop.pendings.insertBack(watcher);

        assert(!watcher.invoked);
        loop.run();
@ -326,7 +322,7 @@ abstract class Loop
        assert(blockTime <= 1.dur!"hours", "Too long to wait.");
        assert(!blockTime.isNegative);
    }
-    body
+    do
    {
        blockTime_ = blockTime;
    }
@ -384,16 +380,16 @@ class BadLoopException : Exception
    }
    version (Epoll)
    {
-        defaultLoop_ = MmapPool.instance.make!EpollLoop;
+        defaultLoop_ = defaultAllocator.make!EpollLoop;
    }
    else version (IOCP)
    {
-        defaultLoop_ = MmapPool.instance.make!IOCPLoop;
+        defaultLoop_ = defaultAllocator.make!IOCPLoop;
    }
    else version (Kqueue)
    {
        import tanya.async.event.kqueue;
-        defaultLoop_ = MmapPool.instance.make!KqueueLoop;
+        defaultLoop_ = defaultAllocator.make!KqueueLoop;
    }
    return defaultLoop_;
 }
@ -414,7 +410,7 @@ in
 {
    assert(loop !is null);
 }
-body
+do
 {
    defaultLoop_ = loop;
 }
--- a/source/tanya/async/package.d
+++ b/source/tanya/async/package.d
@ -5,7 +5,7 @@
 /**
 * This package provides asynchronous capabilities.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
--- a/source/tanya/async/protocol.d
+++ b/source/tanya/async/protocol.d
@ -9,7 +9,7 @@
 * When an event from the network arrives, a protocol method gets
 * called and can respond to the event.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
--- a/source/tanya/async/transport.d
+++ b/source/tanya/async/transport.d
@ -6,7 +6,7 @@
 * This module contains transports which are responsible for data dilvery
 * between two parties of an asynchronous communication.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -65,8 +65,7 @@ interface DuplexTransport : ReadTransport, WriteTransport
    /**
     * Switches the protocol.
     *
-     * The protocol is deallocated by the event loop, it should currently be
-     * allocated with $(D_PSYMBOL MmapPool).
+     * The protocol is deallocated by the event loop.
     *
     * Params:
     *  protocol = Application protocol.
--- a/source/tanya/async/watcher.d
+++ b/source/tanya/async/watcher.d
@ -5,7 +5,7 @@
 /**
 * Watchers register user's interest in some event.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -14,15 +14,12 @@
 */
 module tanya.async.watcher;

-import std.exception;
-import std.functional;
 import tanya.async.loop;
 import tanya.async.protocol;
 import tanya.async.transport;
 import tanya.container.buffer;
-import tanya.container.queue;
+import tanya.container.list;
 import tanya.memory;
-import tanya.memory.mmappool;
 import tanya.network.socket;

 /**
@ -72,7 +69,7 @@ abstract class SocketWatcher : Watcher
    {
        assert(socket !is null);
    }
-    body
+    do
    {
        socket_ = socket;
    }
@ -92,7 +89,7 @@ abstract class SocketWatcher : Watcher
 class ConnectionWatcher : SocketWatcher
 {
    /// Incoming connection queue.
-    Queue!DuplexTransport incoming;
+    DList!DuplexTransport incoming;

    private Protocol delegate() @nogc protocolFactory;

@ -103,7 +100,6 @@ class ConnectionWatcher : SocketWatcher
    this(Socket socket) @nogc
    {
        super(socket);
-        incoming = Queue!DuplexTransport(MmapPool.instance);
    }

    /**
@ -112,7 +108,7 @@ class ConnectionWatcher : SocketWatcher
     */
    void setProtocol(P : Protocol)() @nogc
    {
-        this.protocolFactory = () @nogc => cast(Protocol) MmapPool.instance.make!P;
+        this.protocolFactory = () @nogc => cast(Protocol) defaultAllocator.make!P;
    }

    /**
@ -123,12 +119,12 @@ class ConnectionWatcher : SocketWatcher
    {
        assert(protocolFactory !is null, "Protocol isn't set.");
    }
-    body
+    do
    {
-        foreach (transport; incoming)
+        for (; !this.incoming.empty; this.incoming.removeFront())
        {
-            transport.protocol = protocolFactory();
-            transport.protocol.connected(transport);
+            this.incoming.front.protocol = protocolFactory();
+            this.incoming.front.protocol.connected(this.incoming.front);
        }
    }
 }
--- a/source/tanya/container/array.d
+++ b/source/tanya/container/array.d
@ -5,7 +5,7 @@
 /**
 * Single-dimensioned array.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -16,8 +16,13 @@ module tanya.container.array;

 import core.checkedint;
 import std.algorithm.comparison;
-import std.algorithm.mutation;
+import std.algorithm.mutation : bringToFront,
+                                copy,
+                                fill,
+                                initializeAll,
+                                uninitializedFill;
 import std.meta;
+import tanya.algorithm.mutation;
 import tanya.exception;
 import tanya.memory;
 import tanya.meta.trait;
@ -51,7 +56,7 @@ struct Range(A)
        assert(begin >= container.data);
        assert(end <= container.data + container.length);
    }
-    body
+    do
    {
        this.container = &container;
        this.begin = begin;
@ -82,7 +87,7 @@ struct Range(A)
    {
        assert(!empty);
    }
-    body
+    do
    {
        return *this.begin;
    }
@ -92,7 +97,7 @@ struct Range(A)
    {
        assert(!empty);
    }
-    body
+    do
    {
        return *(this.end - 1);
    }
@ -102,7 +107,7 @@ struct Range(A)
    {
        assert(!empty);
    }
-    body
+    do
    {
        ++this.begin;
    }
@ -112,7 +117,7 @@ struct Range(A)
    {
        assert(!empty);
    }
-    body
+    do
    {
        --this.end;
    }
@ -122,7 +127,7 @@ struct Range(A)
    {
        assert(i < length);
    }
-    body
+    do
    {
        return *(this.begin + i);
    }
@ -143,7 +148,7 @@ struct Range(A)
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(*this.container, this.begin + i, this.begin + j);
    }
@ -154,7 +159,7 @@ struct Range(A)
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(*this.container, this.begin + i, this.begin + j);
    }
@ -264,7 +269,10 @@ struct Array(T)
        {
            // Move each element.
            reserve(init.length_);
-            moveEmplaceAll(init.data[0 .. init.length_], this.data[0 .. init.length_]);
+            foreach (ref target; this.data[0 .. init.length_])
+            {
+                moveEmplace(*init.data++, target);
+            }
            this.length_ = init.length_;
            // Destructor of init should destroy it here.
        }
@ -325,7 +333,7 @@ struct Array(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        allocator_ = allocator;
    }
@ -506,7 +514,6 @@ struct Array(T)
            {
                allocator.deallocate(buf);
            }
-            const T* end = this.data + this.length_;
            for (T* src = this.data, dest = cast(T*) buf; src != end; ++src, ++dest)
            {
                moveEmplace(*src, *dest);
@ -590,7 +597,7 @@ struct Array(T)
    {
        assert(!empty);
    }
-    body
+    do
    {
        length = length - 1;
    }
@ -612,7 +619,7 @@ struct Array(T)
    {
        assert(removed <= howMany);
    }
-    body
+    do
    {
        const toRemove = min(howMany, length);

@ -632,6 +639,11 @@ struct Array(T)
        assert(v.removeBack(3) == 0);
    }

+    private @property inout(T)* end() inout
+    {
+        return this.data + this.length_;
+    }
+
    /**
     * Remove all elements beloning to $(D_PARAM r).
     *
@ -650,10 +662,13 @@ struct Array(T)
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
-        auto end = this.data + this.length;
-        moveAll(Range(this, r.end, end), Range(this, r.begin, end));
+        auto target = r.begin;
+        for (auto source = r.end; source != end; ++source, ++target)
+        {
+            move(*source, *target);
+        }
        length = length - r.length;
        return Range(this, r.begin, this.data + length);
    }
@ -683,7 +698,7 @@ struct Array(T)
        if (isImplicitlyConvertible!(R, T))
    {
        reserve(this.length + 1);
-        moveEmplace(el, *(this.data + this.length_));
+        moveEmplace(el, *end);
        ++this.length_;
    }

@ -806,7 +821,7 @@ struct Array(T)
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        const oldLen = length;
        const offset = r.end - this.data;
@ -823,7 +838,7 @@ struct Array(T)
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        return insertAfter!(T[])(r, el[]);
    }
@ -837,7 +852,7 @@ struct Array(T)
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        const oldLen = length;
        const offset = r.end - this.data;
@ -866,7 +881,7 @@ struct Array(T)
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        return insertAfter(Range(this, this.data, r.begin), el);
    }
@ -879,7 +894,7 @@ struct Array(T)
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        return insertBefore!(T[])(r, el[]);
    }
@ -893,7 +908,7 @@ struct Array(T)
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        const oldLen = length;
        const offset = r.begin - this.data;
@ -1065,7 +1080,7 @@ struct Array(T)
    {
        assert(length > pos);
    }
-    body
+    do
    {
        return *(this.data + pos);
    }
@ -1170,7 +1185,7 @@ struct Array(T)
    {
        assert(!empty);
    }
-    body
+    do
    {
        return *this.data;
    }
@ -1197,7 +1212,7 @@ struct Array(T)
    {
        assert(!empty);
    }
-    body
+    do
    {
        return *(this.data + length - 1);
    }
@ -1230,7 +1245,7 @@ struct Array(T)
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(this, this.data + i, this.data + j);
    }
@ -1242,7 +1257,7 @@ struct Array(T)
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(this, this.data + i, this.data + j);
    }
@ -1313,7 +1328,7 @@ struct Array(T)
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        copy(value[], this.data[i .. j]);
        return opSlice(i, j);
@ -1327,7 +1342,7 @@ struct Array(T)
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        fill(this.data[i .. j], value);
        return opSlice(i, j);
@ -1341,7 +1356,7 @@ struct Array(T)
        assert(j <= length);
        assert(j - i == value.length);
    }
-    body
+    do
    {
        copy(value, this.data[i .. j]);
        return opSlice(i, j);
--- a/source/tanya/container/buffer.d
+++ b/source/tanya/container/buffer.d
@ -5,7 +5,7 @@
 /**
 * This module contains buffers designed for C-style input/output APIs.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -27,7 +27,7 @@ version (unittest)
    {
        assert(start < end);
    }
-    body
+    do
    {
        auto numberRead = end - start;
        for (ubyte i; i < numberRead; ++i)
@ -106,7 +106,7 @@ struct ReadBuffer(T = ubyte)
    {
        assert(allocator_ is null);
    }
-    body
+    do
    {
        allocator_ = allocator;
    }
@ -349,7 +349,7 @@ struct WriteBuffer(T = ubyte)
        assert(size > 0);
        assert(allocator !is null);
    }
-    body
+    do
    {
        blockSize = size;
        ring = size - 1;
@ -549,7 +549,7 @@ struct WriteBuffer(T = ubyte)
    {
        assert(length <= this.length);
    }
-    body
+    do
    {
        auto afterRing = ring + 1;
        auto oldStart = start;
--- a/source/tanya/container/entry.d
+++ b/source/tanya/container/entry.d
@ -5,7 +5,7 @@
 /*
 * Internal package used by containers that rely on entries/nodes.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
--- a/source/tanya/container/list.d
+++ b/source/tanya/container/list.d
@ -3,9 +3,10 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 /**
- * Linked list.
+ * This module contains singly-linked ($(D_PSYMBOL SList)) and doubly-linked
+ * ($(D_PSYMBOL DList)) lists.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -15,11 +16,12 @@
 module tanya.container.list;

 import std.algorithm.comparison;
-import std.algorithm.mutation;
 import std.algorithm.searching;
+import tanya.algorithm.mutation;
 import tanya.container.entry;
 import tanya.memory;
 import tanya.meta.trait;
+import tanya.meta.transform;
 import tanya.range.array;
 import tanya.range.primitive;

@ -63,7 +65,7 @@ struct SRange(L)
    {
        assert(!empty);
    }
-    body
+    do
    {
        return (*this.head).content;
    }
@ -73,7 +75,7 @@ struct SRange(L)
    {
        assert(!empty);
    }
-    body
+    do
    {
        this.head = &(*this.head).next;
    }
@ -123,7 +125,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = SList!int([5, 8, 15]);
        assert(l.front == 5);
@ -171,19 +173,13 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = SList!int(2, 3);
        assert(l.length == 2);
        assert(l.front == 3);
    }

-    private @safe @nogc unittest
-    {
-        auto l = SList!int(0, 0);
-        assert(l.empty);
-    }
-
    /// ditto
    this(const size_t len, shared Allocator allocator = defaultAllocator)
    {
@ -191,7 +187,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = SList!int(2);
        assert(l.length == 2);
@ -204,7 +200,7 @@ struct SList(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.allocator_ = allocator;
    }
@ -262,7 +258,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([5, 1, 234]);
        auto l2 = SList!int(l1);
@ -288,7 +284,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([5, 1, 234]);
        auto l2 = l1;
@ -307,7 +303,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        SList!int l = SList!int([8, 5]);

@ -318,13 +314,15 @@ struct SList(T)

    /**
     * Returns: First element.
+     *
+     * Precondition: $(D_INLINECODE !empty).
     */
    @property ref inout(T) front() inout
    in
    {
        assert(!empty);
    }
-    body
+    do
    {
        return this.head.content;
    }
@ -365,7 +363,7 @@ struct SList(T)
    }

    ///
-    unittest
+    @nogc nothrow pure @safe unittest
    {
        SList!int l;
        int value = 5;
@ -418,7 +416,7 @@ struct SList(T)
    alias insert = insertFront;

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        SList!int l1;

@ -466,13 +464,13 @@ struct SList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        return moveEntry(*r.head, el);
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([234, 5, 1]);
        auto l2 = SList!int([5, 1]);
@ -489,7 +487,7 @@ struct SList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        size_t inserted;
        foreach (e; el)
@ -501,7 +499,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([5, 234, 30, 1]);
        auto l2 = SList!int([5, 1]);
@ -518,14 +516,14 @@ struct SList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        *r.head = allocator.make!Entry(el, *r.head);
        return 1;
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([234, 5, 1]);
        auto l2 = SList!int([5, 1]);
@ -552,7 +550,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([5, 234, 30, 1]);
        auto l2 = SList!int([5, 1]);
@ -571,7 +569,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        SList!int l;

@ -599,7 +597,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        SList!int l1, l2;

@ -640,16 +638,16 @@ struct SList(T)
    {
        assert(!empty);
    }
-    body
+    do
    {
        auto n = this.head.next;

-        this.allocator.dispose(this.head);
+        allocator.dispose(this.head);
        this.head = n;
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        SList!int l;

@ -679,7 +677,7 @@ struct SList(T)
    {
        assert(removed <= howMany);
    }
-    body
+    do
    {
        size_t i;
        for (; i < howMany && !empty; ++i)
@ -690,7 +688,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        SList!int l = SList!int([8, 5, 4]);

@ -715,7 +713,7 @@ struct SList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        auto outOfScopeList = typeof(this)(allocator);
        outOfScopeList.head = *r.head;
@ -725,7 +723,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([5, 234, 30, 1]);
        auto l2 = SList!int([5]);
@ -783,7 +781,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        {
            auto l1 = SList!int([5, 4, 9]);
@ -833,7 +831,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([5, 4, 9]);
        auto l2 = SList!int([9, 4]);
@ -841,14 +839,6 @@ struct SList(T)
        assert(l1 == l2);
    }

-    private @safe @nogc unittest
-    {
-        auto l1 = SList!int();
-        auto l2 = SList!int([9, 4]);
-        l1 = l2[];
-        assert(l1 == l2);
-    }
-
    /**
     * Assigns a static array.
     *
@ -864,7 +854,7 @@ struct SList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = SList!int([5, 4, 9]);
        auto l2 = SList!int([9, 4]);
@ -876,7 +866,7 @@ struct SList(T)
 }

 ///
-@nogc unittest
+@nogc nothrow pure @safe unittest
 {
    SList!int l;
    size_t i;
@ -894,7 +884,7 @@ struct SList(T)
    assert(i == 3);
 }

-@safe @nogc private unittest
+@nogc nothrow pure @safe unittest
 {
    interface Stuff
    {
@ -902,8 +892,14 @@ struct SList(T)
    static assert(is(SList!Stuff));
 }

+@nogc nothrow pure @safe unittest
+{
+    auto l = SList!int(0, 0);
+    assert(l.empty);
+}
+
 // foreach called using opIndex().
-private @nogc @safe unittest
+@nogc nothrow pure @safe unittest
 {
    SList!int l;
    size_t i;
@ -920,8 +916,16 @@ private @nogc @safe unittest
    }
 }

+@nogc nothrow pure @safe unittest
+{
+    auto l1 = SList!int();
+    auto l2 = SList!int([9, 4]);
+    l1 = l2[];
+    assert(l1 == l2);
+}
+
 /**
- * Forward range for the $(D_PSYMBOL DList).
+ * Bidirectional range for the $(D_PSYMBOL DList).
 *
 * Params:
 *  L = List type.
@ -962,7 +966,7 @@ struct DRange(L)
    {
        assert(!empty);
    }
-    body
+    do
    {
        return (*this.head).content;
    }
@ -972,7 +976,7 @@ struct DRange(L)
    {
        assert(!empty);
    }
-    body
+    do
    {
        return (*this.tail).content;
    }
@ -982,7 +986,7 @@ struct DRange(L)
    {
        assert(!empty);
    }
-    body
+    do
    {
        this.head = &(*this.head).next;
    }
@ -992,7 +996,7 @@ struct DRange(L)
    {
        assert(!empty);
    }
-    body
+    do
    {
        this.tail = &(*this.tail).prev;
    }
@ -1011,6 +1015,17 @@ struct DRange(L)
 /**
 * Doubly-linked list.
 *
+ * $(D_PSYMBOL DList) can be also used as a queue. Elements can be enqueued
+ * with $(D_PSYMBOL DList.insertBack). To process the queue a `for`-loop comes
+ * in handy:
+ *
+ * ---
+ * for (; !dlist.empty; dlist.removeFront())
+ * {
+ *  do_something_with(dlist.front);
+ * }
+ * ---
+ *
 * Params:
 *  T = Content type.
 */
@ -1050,7 +1065,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = DList!int([5, 8, 15]);
        assert(l.front == 5);
@ -1100,7 +1115,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = DList!int(2, 3);
        assert(l.length == 2);
@ -1108,12 +1123,6 @@ struct DList(T)
        assert(l.back == 3);
    }

-    private @safe @nogc unittest
-    {
-        auto l = DList!int(0, 0);
-        assert(l.empty);
-    }
-
    /// ditto
    this(const size_t len, shared Allocator allocator = defaultAllocator)
    {
@ -1121,7 +1130,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = DList!int(2);
        assert(l.length == 2);
@ -1134,7 +1143,7 @@ struct DList(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.allocator_ = allocator;
    }
@ -1195,7 +1204,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 1, 234]);
        auto l2 = DList!int(l1);
@ -1222,7 +1231,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 1, 234]);
        auto l2 = l1;
@ -1241,7 +1250,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l = DList!int([8, 5]);

@ -1252,32 +1261,36 @@ struct DList(T)

    /**
     * Returns: First element.
+     *
+     * Precondition: $(D_INLINECODE !empty).
     */
    @property ref inout(T) front() inout
    in
    {
        assert(!empty);
    }
-    body
+    do
    {
        return this.head.content;
    }

    /**
     * Returns: Last element.
+     *
+     * Precondition: $(D_INLINECODE !empty).
     */
    @property ref inout(T) back() inout
    in
    {
        assert(!empty);
    }
-    body
+    do
    {
        return this.tail.content;
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = DList!int([25]);
        assert(l.front == 25);
@ -1318,7 +1331,7 @@ struct DList(T)
        assert((retLength == 0 && head is null && tail is null)
            || (retLength > 0 && head !is null && tail !is null));
    }
-	body
+    do
    {
        size_t retLength;

@ -1370,7 +1383,7 @@ struct DList(T)
    }

    ///
-    unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l;
        int value = 5;
@ -1407,12 +1420,6 @@ struct DList(T)
        return inserted;
    }

-    private @safe @nogc unittest
-    {
-        auto l1 = DList!int([5, 234]);
-        assert(l1.head is l1.head.next.prev);
-    }
-
    /// ditto
    size_t insertFront(size_t R)(T[R] el)
    {
@ -1420,7 +1427,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l1;

@ -1496,7 +1503,7 @@ struct DList(T)
    }

    ///
-    unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l;
        int value = 5;
@ -1543,7 +1550,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l1;

@ -1594,13 +1601,13 @@ struct DList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        return moveFront(*r.head, el);
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([234, 5, 1]);
        auto l2 = DList!int([5, 1]);
@ -1614,7 +1621,7 @@ struct DList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        auto temp = allocator.make!Entry(el, *r.head);

@ -1633,7 +1640,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([234, 5, 1]);
        auto l2 = DList!int([5, 1]);
@ -1652,7 +1659,7 @@ struct DList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        size_t inserted;
        foreach (e; el)
@ -1664,7 +1671,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 234, 30, 1]);
        auto l2 = DList!int([5, 1]);
@ -1709,13 +1716,13 @@ struct DList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        return moveBack(*r.tail, el);
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 234, 1]);
        auto l2 = DList!int([5, 1]);
@ -1725,22 +1732,13 @@ struct DList(T)
        assert(l1 == l2);
    }

-    private @safe @nogc unittest
-    {
-        DList!int l;
-        l.insertAfter(l[], 234);
-        assert(l.front == 234);
-        assert(l.back == 234);
-        assert(l.length == 1);
-    }
-
    /// ditto
    size_t insertAfter(Range r, ref T el) @trusted
    in
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        auto temp = allocator.make!Entry(el, null, *r.tail);

@ -1759,7 +1757,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 1, 234]);
        auto l2 = DList!int([5, 1]);
@ -1778,7 +1776,7 @@ struct DList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        size_t inserted;
        foreach (e; el)
@ -1789,7 +1787,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 234, 30, 1]);
        auto l2 = DList!int([5, 1]);
@ -1826,7 +1824,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l;

@ -1854,7 +1852,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l1, l2;

@ -1895,11 +1893,11 @@ struct DList(T)
    {
        assert(!empty);
    }
-    body
+    do
    {
        auto n = this.head.next;

-        allocator.dispose(this.head);
+        this.allocator_.dispose(this.head);
        this.head = n;
        if (this.head is null)
        {
@ -1912,7 +1910,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l;

@ -1931,7 +1929,7 @@ struct DList(T)
    {
        assert(!empty);
    }
-    body
+    do
    {
        auto n = this.tail.prev;

@ -1948,7 +1946,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l = DList!int([9, 8]);

@ -1977,7 +1975,7 @@ struct DList(T)
    {
        assert(removed <= howMany);
    }
-    body
+    do
    {
        size_t i;
        for (; i < howMany && !empty; ++i)
@ -1988,7 +1986,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l = DList!int([8, 5, 4]);

@ -2004,7 +2002,7 @@ struct DList(T)
    {
        assert(removed <= howMany);
    }
-    body
+    do
    {
        size_t i;
        for (; i < howMany && !empty; ++i)
@ -2015,7 +2013,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        DList!int l = DList!int([8, 5, 4]);

@ -2040,13 +2038,14 @@ struct DList(T)
    {
        assert(checkRangeBelonging(r));
    }
-    body
+    do
    {
        // Save references to the elements before and after the range.
-        Entry* tailNext, headPrev;
-        if (*r.tail !is null && (*r.tail).next !is null)
+        Entry* headPrev;
+        Entry** tailNext;
+        if (*r.tail !is null)
        {
-            tailNext = (*r.tail).next;
+            tailNext = &(*r.tail).next;
        }
        if (*r.head !is null)
        {
@ -2055,26 +2054,42 @@ struct DList(T)

        // Remove the elements.
        Entry* e = *r.head;
-        while (e !is tailNext)
+        while (e !is *tailNext)
        {
            auto next = e.next;
-            allocator.dispose(e);
+            /* Workaround for dmd 2.076.1 bug on OSX. Invariants fail when
+               the allocator is called. Here it should be safe to use
+               allocator_ directory, since the list isn't empty.
+               See also removeFront. */
+            this.allocator_.dispose(e);
            e = next;
        }

        // Connect the elements before and after the removed range.
-        if (tailNext !is null)
+        if (*tailNext !is null)
        {
-            tailNext.prev = headPrev;
+            (*tailNext).prev = headPrev;
        }
-        *r.head = tailNext;
-        *r.tail = tail;
+        else
+        {
+            this.tail = headPrev;
+        }
+        if (headPrev !is null)
+        {
+            headPrev.next = *tailNext;
+        }
+        else
+        {
+            this.head = *tailNext;
+        }
+        r.head = tailNext;
+        r.tail = &this.tail;

        return r;
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 234, 30, 1]);
        auto l2 = DList!int([5]);
@ -2086,22 +2101,6 @@ struct DList(T)
        assert(l1 == l2);
    }

-    // Issue 260: https://issues.caraus.io/issues/260.
-    private @safe @nogc unittest
-    {
-        auto l1 = DList!int([5, 234, 30, 1]);
-        auto l2 = DList!int([5, 1]);
-        auto r = l1[];
-
-        r.popFront();
-        r.popBack();
-        assert(r.front == 234);
-        assert(r.back == 30);
-
-        assert(!l1.remove(r).empty);
-        assert(l1 == l2);
-    }
-
    /**
     * Returns: Range that iterates over all elements of the container, in
     *          forward order.
@ -2182,7 +2181,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 4, 9]);
        auto l2 = DList!int([9, 4]);
@ -2190,14 +2189,6 @@ struct DList(T)
        assert(l1 == l2);
    }

-    private @safe @nogc unittest
-    {
-        auto l1 = DList!int();
-        auto l2 = DList!int([9, 4]);
-        l1 = l2[];
-        assert(l1 == l2);
-    }
-
    /**
     * Assigns a static array.
     *
@ -2213,7 +2204,7 @@ struct DList(T)
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto l1 = DList!int([5, 4, 9]);
        auto l2 = DList!int([9, 4]);
@ -2225,7 +2216,7 @@ struct DList(T)
 }

 ///
-@nogc unittest
+@nogc nothrow pure @safe unittest
 {
    DList!int l;
    size_t i;
@ -2243,8 +2234,7 @@ struct DList(T)
    assert(i == 3);
 }

-// Issue 232: https://issues.caraus.io/issues/232.
-private @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    class A
    {
@ -2252,3 +2242,67 @@ private @nogc unittest
    static assert(is(SList!(A*)));
    static assert(is(DList!(A*)));
 }
+
+// Removes all elements
+@nogc nothrow pure @safe unittest
+{
+    auto l = DList!int([5]);
+    assert(l.remove(l[]).empty);
+}
+
+@nogc nothrow pure @safe unittest
+{
+    auto l1 = DList!int([5, 234, 30, 1]);
+    auto l2 = DList!int([5, 1]);
+    auto r = l1[];
+
+    r.popFront();
+    r.popBack();
+    assert(r.front == 234);
+    assert(r.back == 30);
+
+    assert(!l1.remove(r).empty);
+    assert(l1 == l2);
+}
+
+@nogc nothrow pure @safe unittest
+{
+    auto l = DList!int(0, 0);
+    assert(l.empty);
+}
+
+@nogc nothrow pure @safe unittest
+{
+    auto l1 = DList!int([5, 234]);
+    assert(l1.head is l1.head.next.prev);
+}
+
+@nogc nothrow pure @safe unittest
+{
+    DList!int l;
+    l.insertAfter(l[], 234);
+    assert(l.front == 234);
+    assert(l.back == 234);
+    assert(l.length == 1);
+}
+
+@nogc nothrow pure @safe unittest
+{
+    auto l1 = DList!int();
+    auto l2 = DList!int([9, 4]);
+    l1 = l2[];
+    assert(l1 == l2);
+}
+
+// Sets the new head
+@nogc nothrow pure @safe unittest
+{
+    auto l1 = DList!int([5, 234, 30, 1]);
+    auto l2 = DList!int([1]);
+    auto r = l1[];
+
+    r.popBack();
+
+    assert(!l1.remove(r).empty);
+    assert(l1 == l2);
+}
--- a/source/tanya/container/package.d
+++ b/source/tanya/container/package.d
@ -5,7 +5,7 @@
 /**
 * Abstract data types whose instances are collections of other objects.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
--- a/source/tanya/container/queue.d
+++ b/source/tanya/container/queue.d
@ -5,16 +5,17 @@
 /**
 * FIFO queue.
 *
- * Copyright: Eugene Wissner 2016-2017.
+ * Copyright: Eugene Wissner 2016-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
 * Source: $(LINK2 https://github.com/caraus-ecms/tanya/blob/master/source/tanya/container/queue.d,
 *                 tanya/container/queue.d)
 */
+deprecated("Use tanya.container.list.DList instead")
 module tanya.container.queue;

-import std.algorithm.mutation;
+import tanya.algorithm.mutation;
 import tanya.container.entry;
 import tanya.exception;
 import tanya.memory;
@ -167,7 +168,7 @@ struct Queue(T)
    {
        assert(!empty);
    }
-    body
+    do
    {
        auto n = first.next;
        T ret = move(first.content);
--- a/source/tanya/container/set.d
+++ b/source/tanya/container/set.d
@ -6,7 +6,7 @@
 * This module implements a $(D_PSYMBOL Set) container that stores unique
 * values without any particular order.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -15,7 +15,7 @@
 */
 module tanya.container.set;

-import std.algorithm.mutation;
+import tanya.algorithm.mutation;
 import tanya.container;
 import tanya.container.entry;
 import tanya.memory;
@ -76,7 +76,7 @@ struct Range(E)
        assert(this.dataRange.empty
            || this.dataRange.back.status == BucketStatus.used);
    }
-    body
+    do
    {
        do
        {
@ -96,7 +96,7 @@ struct Range(E)
        assert(this.dataRange.empty
            || this.dataRange.back.status == BucketStatus.used);
    }
-    body
+    do
    {
        do
        {
@ -111,7 +111,7 @@ struct Range(E)
        assert(!this.dataRange.empty);
        assert(this.dataRange.front.status == BucketStatus.used);
    }
-    body
+    do
    {
        return dataRange.front.content;
    }
@ -122,7 +122,7 @@ struct Range(E)
        assert(!this.dataRange.empty);
        assert(this.dataRange.back.status == BucketStatus.used);
    }
-    body
+    do
    {
        return dataRange.back.content;
    }
@ -180,7 +180,7 @@ struct Set(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this(allocator);
        rehash(n);
@ -192,7 +192,7 @@ struct Set(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.data = typeof(this.data)(allocator);
    }
@ -227,7 +227,7 @@ struct Set(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.data = typeof(this.data)(init.data, allocator);
    }
@ -239,7 +239,7 @@ struct Set(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.data = typeof(this.data)(move(init.data), allocator);
        this.lengthIndex = init.lengthIndex;
@ -285,7 +285,7 @@ struct Set(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        return cast(shared Allocator) this.data.allocator;
    }
@ -371,7 +371,7 @@ struct Set(T)
    {
        assert(buckets.length > 0);
    }
-    body
+    do
    {
        return hash % buckets.length;
    }
--- a/source/tanya/container/string.d
+++ b/source/tanya/container/string.d
@ -17,7 +17,7 @@
 * Internally $(D_PSYMBOL String) is represented by a sequence of
 * $(D_KEYWORD char)s.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -27,9 +27,9 @@
 module tanya.container.string;

 import std.algorithm.comparison;
-import std.algorithm.mutation;
+import std.algorithm.mutation : bringToFront, copy;
 import std.algorithm.searching;
-static import std.range;
+import tanya.algorithm.mutation;
 import tanya.memory;
 import tanya.meta.trait;
 import tanya.meta.transform;
@ -90,7 +90,7 @@ if (is(Unqual!E == char))
        assert(begin >= container.data);
        assert(end <= container.data + container.length);
    }
-    body
+    do
    {
        this.container = &container;
        this.begin = begin;
@ -121,7 +121,7 @@ if (is(Unqual!E == char))
    {
        assert(!empty);
    }
-    body
+    do
    {
        return *this.begin;
    }
@ -131,7 +131,7 @@ if (is(Unqual!E == char))
    {
        assert(!empty);
    }
-    body
+    do
    {
        return *(this.end - 1);
    }
@ -141,7 +141,7 @@ if (is(Unqual!E == char))
    {
        assert(!empty);
    }
-    body
+    do
    {
        ++this.begin;
    }
@ -151,7 +151,7 @@ if (is(Unqual!E == char))
    {
        assert(!empty);
    }
-    body
+    do
    {
        --this.end;
    }
@ -161,7 +161,7 @@ if (is(Unqual!E == char))
    {
        assert(i < length);
    }
-    body
+    do
    {
        return *(this.begin + i);
    }
@ -182,7 +182,7 @@ if (is(Unqual!E == char))
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(*this.container, this.begin + i, this.begin + j);
    }
@ -193,7 +193,7 @@ if (is(Unqual!E == char))
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(*this.container, this.begin + i, this.begin + j);
    }
@ -232,7 +232,7 @@ if (is(Unqual!E == char))
        assert(begin >= container.data);
        assert(end <= container.data + container.length);
    }
-    body
+    do
    {
        this.container = &container;
        this.begin = begin;
@ -260,10 +260,11 @@ if (is(Unqual!E == char))
    {
        assert(chr < 0xd800 || chr > 0xdfff);
    }
-    body
+    do
    {
        dchar chr;
-        ubyte units, mask;
+        ubyte units;
+        int mask;
        const(char)* it = this.begin;

        if (*it & 0x80)
@ -293,7 +294,7 @@ if (is(Unqual!E == char))
    {
        assert(!empty);
    }
-    body
+    do
    {
        ubyte units;
        if ((*begin & 0xf0) == 0xf0)
@ -436,7 +437,7 @@ struct String
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.allocator_ = allocator;
    }
@ -526,7 +527,7 @@ struct String
        assert(capacity - length >= 4);
        assert(src - 0x10000 < 0x100000);
    }
-    body
+    do
    {
        auto dst = this.data + length;

@ -544,7 +545,7 @@ struct String
    {
        assert(capacity - length >= 3);
    }
-    body
+    do
    {
        auto dst = this.data + length;
        if (chr < 0x80)
@ -757,7 +758,7 @@ struct String
                    }
                    dchar d = (range[0] - 0xd800) | ((range[1] - 0xdc00) >> 10);

-                    std.range.popFrontN(range, 2);
+                    popFrontN(range, 2);
                }
                else
                {
@ -922,7 +923,7 @@ struct String
        assert(j <= length);
        assert(j - i == value.length);
    }
-    body
+    do
    {
        auto target = opSlice(i, j);
        copy(value, target);
@ -939,7 +940,7 @@ struct String
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        copy(value[], this.data[i .. j]);
        return opSlice(i, j);
@ -955,7 +956,7 @@ struct String
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        for (auto p = this.data + i; p < this.data + j; ++p)
        {
@ -1036,7 +1037,7 @@ struct String
    {
        assert(length > pos);
    }
-    body
+    do
    {
        return *(this.data + pos);
    }
@ -1186,7 +1187,7 @@ struct String
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(this, this.data + i, this.data + j);
    }
@ -1199,7 +1200,7 @@ struct String
        assert(i <= j);
        assert(j <= length);
    }
-    body
+    do
    {
        return typeof(return)(this, this.data + i, this.data + j);
    }
@ -1507,7 +1508,7 @@ struct String
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        auto end = this.data + this.length;
        copy(ByCodeUnit!char(this, r.end, end), ByCodeUnit!char(this, r.begin, end));
@ -1525,7 +1526,7 @@ struct String
        assert(s.length == 38);

        auto byCodePoint = s.byCodePoint();
-        std.range.popFrontN(byCodePoint, 8);
+        popFrontN(byCodePoint, 8);

        assert(s.remove(byCodePoint).count == 0);
        assert(s == "Из слова");
@ -1560,12 +1561,14 @@ struct String
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
-        auto oldLen = this.data + length;
+        const oldLength = length;
+        const rangeEnd = r.end - this.data;
        const inserted = insertBack(el);
-        bringToFront(ByCodeUnit!char(this, r.end, oldLen),
-                     ByCodeUnit!char(this, oldLen, this.data + length));
+        auto containerEnd = this.data + oldLength;
+        bringToFront(ByCodeUnit!char(this, this.data + rangeEnd, containerEnd),
+                     ByCodeUnit!char(this, containerEnd, this.data + length));
        return inserted;
    }

@ -1593,7 +1596,7 @@ struct String
        assert(r.begin >= this.data);
        assert(r.end <= this.data + length);
    }
-    body
+    do
    {
        return insertAfter(R(this, this.data, r.begin), el);
    }
--- a/source/tanya/conv.d
+++ b/source/tanya/conv.d
@ -14,9 +14,17 @@
 */
 module tanya.conv;

+import tanya.container.string;
+import tanya.format;
 import tanya.memory;
 import tanya.memory.op;
 import tanya.meta.trait;
+import tanya.meta.transform;
+
+version (unittest)
+{
+    import tanya.test.assertion;
+}

 /**
 * Constructs a new object of type $(D_PARAM T) in $(D_PARAM memory) with the
@ -58,7 +66,7 @@ out (result)
 {
    assert(memory.ptr is (() @trusted => cast(void*) result)());
 }
-body
+do
 {
    copy(typeid(T).initializer, memory);

@ -83,7 +91,8 @@ in
 out (result)
 {
    assert(memory.ptr is (() @trusted => cast(void*) result)());
-}body
+}
+do
 {
    copy(typeid(T).initializer, memory);

@ -136,7 +145,7 @@ out (result)
 {
    assert(memory.ptr is result);
 }
-body
+do
 {
    auto result = (() @trusted => cast(T*) memory.ptr)();
    static if (Args.length == 1)
@ -161,7 +170,7 @@ out (result)
 {
    assert(memory.ptr is result);
 }
-body
+do
 {
    auto result = (() @trusted => cast(T*) memory.ptr)();
    static if (!hasElaborateAssign!T && isAssignable!T)
@ -233,3 +242,469 @@ body
    }
    static assert(is(typeof(emplace!F((void[]).init))));
 }
+
+/**
+ * Thrown if a type conversion fails.
+ */
+final class ConvException : Exception
+{
+    /**
+     * Params:
+     *  msg  = The message for the exception.
+     *  file = The file where the exception occurred.
+     *  line = The line number where the exception occurred.
+     *  next = The previous exception in the chain of exceptions, if any.
+     */
+    this(string msg,
+         string file = __FILE__,
+         size_t line = __LINE__,
+         Throwable next = null) @nogc @safe pure nothrow
+    {
+        super(msg, file, line, next);
+    }
+}
+
+/**
+ * If the source type $(D_PARAM From) and the target type $(D_PARAM To) are
+ * equal, does nothing. If $(D_PARAM From) can be implicitly converted to
+ * $(D_PARAM To), just returns $(D_PARAM from).
+ *
+ * Params:
+ *  To = Target type.
+ *
+ * Returns: $(D_PARAM from).
+ */
+template to(To)
+{
+    /**
+     * Params:
+     *  From = Source type.
+     *  from = Source value.
+     */
+    ref To to(From)(ref From from)
+    if (is(To == From))
+    {
+        return from;
+    }
+
+    /// ditto
+    To to(From)(From from)
+    if (is(Unqual!To == Unqual!From) || (isNumeric!From && isFloatingPoint!To))
+    {
+        return from;
+    }
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    auto val = 5.to!int();
+    assert(val == 5);
+    static assert(is(typeof(val) == int));
+}
+
+@nogc nothrow pure @safe unittest
+{
+    int val = 5;
+    assert(val.to!int() == 5);
+}
+
+/**
+ * Performs checked conversion from an integral type $(D_PARAM From) to an
+ * integral type $(D_PARAM To).
+ *
+ * Params:
+ *  From = Source type.
+ *  To   = Target type.
+ *  from = Source value.
+ *
+ * Returns: $(D_PARAM from) converted to $(D_PARAM To).
+ *
+ * Throws: $(D_PSYMBOL ConvException) if $(D_PARAM from) is too small or too
+ *         large to be represented by $(D_PARAM To).
+ */
+To to(To, From)(From from)
+if (isIntegral!From
+ && isIntegral!To
+ && !is(Unqual!To == Unqual!From)
+ && !is(To == enum))
+{
+    static if ((isUnsigned!From && isSigned!To && From.sizeof == To.sizeof)
+            || From.sizeof > To.sizeof)
+    {
+        if (from > To.max)
+        {
+            throw make!ConvException(defaultAllocator,
+                                     "Positive integer overflow");
+        }
+    }
+    static if (isSigned!From)
+    {
+        static if (isUnsigned!To)
+        {
+            if (from < 0)
+            {
+                throw make!ConvException(defaultAllocator,
+                                         "Negative integer overflow");
+            }
+        }
+        else static if (From.sizeof > To.sizeof)
+        {
+            if (from < To.min)
+            {
+                throw make!ConvException(defaultAllocator,
+                                         "Negative integer overflow");
+            }
+        }
+    }
+    static if (From.sizeof <= To.sizeof)
+    {
+        return from;
+    }
+    else static if (isSigned!To)
+    {
+        return cast(To) from;
+    }
+    else
+    {
+        return from & To.max;
+    }
+}
+
+@nogc nothrow pure @safe unittest
+{
+    // ubyte -> ushort
+    assert((cast(ubyte) 0).to!ushort == 0);
+    assert((cast(ubyte) 1).to!ushort == 1);
+    assert((cast(ubyte) (ubyte.max - 1)).to!ushort == ubyte.max - 1);
+    assert((cast(ubyte) ubyte.max).to!ushort == ubyte.max);
+
+    // ubyte -> short
+    assert((cast(ubyte) 0).to!short == 0);
+    assert((cast(ubyte) 1).to!short == 1);
+    assert((cast(ubyte) (ubyte.max - 1)).to!short == ubyte.max - 1);
+    assert((cast(ubyte) ubyte.max).to!short == ubyte.max);
+}
+
+@nogc pure @safe unittest
+{
+    // ubyte <- ushort
+    assert((cast(ushort) 0).to!ubyte == 0);
+    assert((cast(ushort) 1).to!ubyte == 1);
+    assert((cast(ushort) (ubyte.max - 1)).to!ubyte == ubyte.max - 1);
+    assert((cast(ushort) ubyte.max).to!ubyte == ubyte.max);
+
+    // ubyte <- short
+    assert((cast(short) 0).to!ubyte == 0);
+    assert((cast(short) 1).to!ubyte == 1);
+    assert((cast(short) (ubyte.max - 1)).to!ubyte == ubyte.max - 1);
+    assert((cast(short) ubyte.max).to!ubyte == ubyte.max);
+
+    // short <-> int
+    assert(short.min.to!int == short.min);
+    assert((short.min + 1).to!int == short.min + 1);
+    assert((cast(short) -1).to!int == -1);
+    assert((cast(short) 0).to!int == 0);
+    assert((cast(short) 1).to!int == 1);
+    assert((short.max - 1).to!int == short.max - 1);
+    assert(short.max.to!int == short.max);
+
+    assert((cast(int) short.min).to!short == short.min);
+    assert((cast(int) short.min + 1).to!short == short.min + 1);
+    assert((cast(int) -1).to!short == -1);
+    assert((cast(int) 0).to!short == 0);
+    assert((cast(int) 1).to!short == 1);
+    assert((cast(int) short.max - 1).to!short == short.max - 1);
+    assert((cast(int) short.max).to!short == short.max);
+
+    // uint <-> int
+    assert((cast(uint) 0).to!int == 0);
+    assert((cast(uint) 1).to!int == 1);
+    assert((cast(uint) (int.max - 1)).to!int == int.max - 1);
+    assert((cast(uint) int.max).to!int == int.max);
+
+    assert((cast(int) 0).to!uint == 0);
+    assert((cast(int) 1).to!uint == 1);
+    assert((cast(int) (int.max - 1)).to!uint == int.max - 1);
+    assert((cast(int) int.max).to!uint == int.max);
+}
+
+@nogc pure @safe unittest
+{
+    assertThrown!ConvException(&to!(short, int), int.min);
+    assertThrown!ConvException(&to!(short, int), int.max);
+    assertThrown!ConvException(&to!(ushort, uint), uint.max);
+    assertThrown!ConvException(&to!(uint, int), -1);
+}
+
+@nogc nothrow pure @safe unittest
+{
+    enum Test : int
+    {
+        one,
+        two,
+    }
+    assert(Test.one.to!int == 0);
+    assert(Test.two.to!int == 1);
+}
+
+/**
+ * Converts a floating point number to an integral type.
+ *
+ * Params:
+ *  From = Source type.
+ *  To   = Target type.
+ *  from = Source value.
+ *
+ * Returns: Truncated $(D_PARAM from) (everything after the decimal point is
+ *          dropped).
+ *
+ * Throws: $(D_PSYMBOL ConvException) if
+ *         $(D_INLINECODE from < To.min || from > To.max).
+ */
+To to(To, From)(From from)
+if (isFloatingPoint!From
+ && isIntegral!To
+ && !is(Unqual!To == Unqual!From)
+ && !is(To == enum))
+{
+    if (from > To.max)
+    {
+        throw make!ConvException(defaultAllocator,
+                                 "Positive number overflow");
+    }
+    else if (from < To.min)
+    {
+        throw make!ConvException(defaultAllocator,
+                                 "Negative number overflow");
+    }
+    return cast(To) from;
+}
+
+///
+@nogc pure @safe unittest
+{
+    assert(1.5.to!int == 1);
+    assert(2147483646.5.to!int == 2147483646);
+    assert((-2147483647.5).to!int == -2147483647);
+    assert(2147483646.5.to!uint == 2147483646);
+}
+
+@nogc pure @safe unittest
+{
+    assertThrown!ConvException(&to!(int, double), 2147483647.5);
+    assertThrown!ConvException(&to!(int, double), -2147483648.5);
+    assertThrown!ConvException(&to!(uint, double), -21474.5);
+}
+
+/**
+ * Performs checked conversion from an integral type $(D_PARAM From) to an
+ * $(D_KEYWORD enum).
+ *
+ * Params:
+ *  From = Source type.
+ *  To   = Target type.
+ *  from = Source value.
+ *
+ * Returns: $(D_KEYWORD enum) value.
+ *
+ * Throws: $(D_PSYMBOL ConvException) if $(D_PARAM from) is not a member of
+ *         $(D_PSYMBOL To).
+ */
+To to(To, From)(From from)
+if (isIntegral!From && is(To == enum))
+{
+    foreach (m; EnumMembers!To)
+    {
+        if (from == m)
+        {
+            return m;
+        }
+    }
+    throw make!ConvException(defaultAllocator,
+                             "Value not found in enum '" ~ To.stringof ~ "'");
+}
+
+///
+@nogc pure @safe unittest
+{
+    enum Test : int
+    {
+        one,
+        two,
+    }
+    static assert(is(typeof(1.to!Test) == Test));
+    assert(0.to!Test == Test.one);
+    assert(1.to!Test == Test.two);
+}
+
+@nogc pure @safe unittest
+{
+    enum Test : uint
+    {
+        one,
+        two,
+    }
+    assertThrown!ConvException(&to!(Test, int), 5);
+}
+
+/**
+ * Converts $(D_PARAM from) to a boolean.
+ *
+ * If $(D_PARAM From) is a numeric type, then `1` becomes $(D_KEYWORD true),
+ * `0` $(D_KEYWORD false). Otherwise $(D_PSYMBOL ConvException) is thrown.
+ *
+ * If $(D_PARAM To) is a string (built-in string or $(D_PSYMBOL String)),
+ * then `"true"` or `"false"` are converted to the appropriate boolean value.
+ * Otherwise $(D_PSYMBOL ConvException) is thrown.
+ *
+ * Params:
+ *  From = Source type.
+ *  To   = Target type.
+ *  from = Source value.
+ *
+ * Returns: $(D_KEYWORD from) converted to a boolean.
+ *
+ * Throws: $(D_PSYMBOL ConvException) if $(D_PARAM from) isn't convertible.
+ */
+To to(To, From)(From from)
+if (isNumeric!From && is(Unqual!To == bool) && !is(Unqual!To == Unqual!From))
+{
+    if (from == 0)
+    {
+        return false;
+    }
+    else if (from < 0)
+    {
+        throw make!ConvException(defaultAllocator,
+                                 "Negative number overflow");
+    }
+    else if (from <= 1)
+    {
+        return true;
+    }
+    throw make!ConvException(defaultAllocator,
+                             "Positive number overflow");
+}
+
+///
+@nogc pure @safe unittest
+{
+    assert(!0.0.to!bool);
+    assert(0.2.to!bool);
+    assert(0.5.to!bool);
+    assert(1.0.to!bool);
+
+    assert(!0.to!bool);
+    assert(1.to!bool);
+}
+
+@nogc pure @safe unittest
+{
+    assertThrown!ConvException(&to!(bool, int), -1);
+    assertThrown!ConvException(&to!(bool, int), 2);
+}
+
+/// ditto
+To to(To, From)(auto ref const From from)
+if ((is(From == String) || isSomeString!From) && is(Unqual!To == bool))
+{
+    if (from == "true")
+    {
+        return true;
+    }
+    else if (from == "false")
+    {
+        return false;
+    }
+    throw make!ConvException(defaultAllocator,
+                             "String doesn't contain a boolean value");
+}
+
+///
+@nogc pure @safe unittest
+{
+    assert("true".to!bool);
+    assert(!"false".to!bool);
+    assert(String("true").to!bool);
+    assert(!String("false").to!bool);
+
+}
+
+@nogc pure @safe unittest
+{
+    assertThrown!ConvException(() => "1".to!bool);
+}
+
+/**
+ * Converts a boolean to $(D_PARAM To).
+ *
+ * If $(D_PARAM To) is a numeric type, then $(D_KEYWORD true) becomes `1`,
+ * $(D_KEYWORD false) `0`.
+ *
+ * If $(D_PARAM To) is a $(D_PSYMBOL String), then `"true"` or `"false"`
+ * is returned.
+ *
+ * Params:
+ *  From = Source type.
+ *  To   = Target type.
+ *  from = Source value.
+ *
+ * Returns: $(D_PARAM from) converted to $(D_PARAM To).
+ */
+To to(To, From)(From from)
+if (is(Unqual!From == bool) && isNumeric!To && !is(Unqual!To == Unqual!From))
+{
+    return from;
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(true.to!float == 1.0);
+    assert(true.to!double == 1.0);
+    assert(true.to!ubyte == 1);
+    assert(true.to!byte == 1);
+    assert(true.to!ushort == 1);
+    assert(true.to!short == 1);
+    assert(true.to!uint == 1);
+    assert(true.to!int == 1);
+
+    assert(false.to!float == 0);
+    assert(false.to!double == 0);
+    assert(false.to!ubyte == 0);
+    assert(false.to!byte == 0);
+    assert(false.to!ushort == 0);
+    assert(false.to!short == 0);
+    assert(false.to!uint == 0);
+    assert(false.to!int == 0);
+}
+
+/**
+ * Converts $(D_PARAM From) to a $(D_PSYMBOL String).
+ *
+ * Params:
+ *  From = Source type.
+ *  To   = Target type.
+ *  from = Source value.
+ *
+ * Returns: $(D_PARAM from) converted to $(D_PSYMBOL String).
+ */
+To to(To, From)(auto ref From from)
+if (is(Unqual!To == String))
+{
+    return format!"{}"(from);
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(true.to!String == "true");
+    assert(false.to!String == "false");
+}
+
+@nogc nothrow pure @safe unittest
+{
+    static assert(is(typeof((const String("true")).to!bool)));
+    static assert(is(typeof(false.to!(const String) == "false")));
+}
--- a/source/tanya/format.d
+++ b/source/tanya/format.d
--- a/source/tanya/format/conv.d
+++ b/source/tanya/format/conv.d
@ -1,691 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/**
- * This module provides functions for converting between different types.
- *
- * Copyright: Eugene Wissner 2017.
- * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
- *                  Mozilla Public License, v. 2.0).
- * Authors: Jeff Roberts, $(LINK2 mailto:info@caraus.de, Eugene Wissner)
- * Source: $(LINK2 https://github.com/caraus-ecms/tanya/blob/master/source/tanya/format/conv.d,
- *                 tanya/format/conv.d)
- */
-module tanya.format.conv;
-
-import tanya.container.string;
-import tanya.memory;
-import tanya.memory.op;
-import tanya.meta.trait;
-import tanya.meta.transform;
-
-/**
- * Thrown if a type conversion fails.
- */
-final class ConvException : Exception
-{
-    /**
-     * Params:
-     *  msg  = The message for the exception.
-     *  file = The file where the exception occurred.
-     *  line = The line number where the exception occurred.
-     *  next = The previous exception in the chain of exceptions, if any.
-     */
-    this(string msg,
-         string file = __FILE__,
-         size_t line = __LINE__,
-         Throwable next = null) @nogc @safe pure nothrow
-    {
-        super(msg, file, line, next);
-    }
-}
-
-/**
- * If the source type $(D_PARAM From) and the target type $(D_PARAM To) are
- * equal, does nothing. If $(D_PARAM From) can be implicitly converted to
- * $(D_PARAM To), just returns $(D_PARAM from).
- *
- * Params:
- *  To = Target type.
- *
- * Returns: $(D_PARAM from).
- */
-template to(To)
-{
-    /**
-     * Params:
-     *  From = Source type.
-     *  from = Source value.
-     */
-    ref To to(From)(ref From from)
-    if (is(To == From))
-    {
-        return from;
-    }
-
-    /// ditto
-    To to(From)(From from)
-    if (is(Unqual!To == Unqual!From) || (isNumeric!From && isFloatingPoint!To))
-    {
-        return from;
-    }
-}
-
-///
-pure nothrow @safe @nogc unittest
-{
-    auto val = 5.to!int();
-    assert(val == 5);
-    static assert(is(typeof(val) == int));
-}
-
-private pure nothrow @safe @nogc unittest
-{
-    int val = 5;
-    assert(val.to!int() == 5);
-}
-
-/**
- * Performs checked conversion from an integral type $(D_PARAM From) to an
- * integral type $(D_PARAM To).
- *
- * Params:
- *  From = Source type.
- *  To   = Target type.
- *  from = Source value.
- *
- * Returns: $(D_PARAM from) converted to $(D_PARAM To).
- *
- * Throws: $(D_PSYMBOL ConvException) if $(D_PARAM from) is too small or too
- *         large to be represented by $(D_PARAM To).
- */
-To to(To, From)(From from)
-if (isIntegral!From
- && isIntegral!To
- && !is(Unqual!To == Unqual!From)
- && !is(To == enum))
-{
-    static if ((isUnsigned!From && isSigned!To && From.sizeof == To.sizeof)
-            || From.sizeof > To.sizeof)
-    {
-        if (from > To.max)
-        {
-            throw make!ConvException(defaultAllocator,
-                                     "Positive integer overflow");
-        }
-    }
-    static if (isSigned!From)
-    {
-        static if (isUnsigned!To)
-        {
-            if (from < 0)
-            {
-                throw make!ConvException(defaultAllocator,
-                                         "Negative integer overflow");
-            }
-        }
-        else static if (From.sizeof > To.sizeof)
-        {
-            if (from < To.min)
-            {
-                throw make!ConvException(defaultAllocator,
-                                         "Negative integer overflow");
-            }
-        }
-    }
-    static if (From.sizeof <= To.sizeof)
-    {
-        return from;
-    }
-    else static if (isSigned!To)
-    {
-        return cast(To) from;
-    }
-    else
-    {
-        return from & To.max;
-    }
-}
-
-private pure nothrow @safe @nogc unittest
-{
-    // ubyte -> ushort
-    assert((cast(ubyte) 0).to!ushort == 0);
-    assert((cast(ubyte) 1).to!ushort == 1);
-    assert((cast(ubyte) (ubyte.max - 1)).to!ushort == ubyte.max - 1);
-    assert((cast(ubyte) ubyte.max).to!ushort == ubyte.max);
-
-    // ubyte -> short
-    assert((cast(ubyte) 0).to!short == 0);
-    assert((cast(ubyte) 1).to!short == 1);
-    assert((cast(ubyte) (ubyte.max - 1)).to!short == ubyte.max - 1);
-    assert((cast(ubyte) ubyte.max).to!short == ubyte.max);
-}
-
-private unittest
-{
-    // ubyte <- ushort
-    assert((cast(ushort) 0).to!ubyte == 0);
-    assert((cast(ushort) 1).to!ubyte == 1);
-    assert((cast(ushort) (ubyte.max - 1)).to!ubyte == ubyte.max - 1);
-    assert((cast(ushort) ubyte.max).to!ubyte == ubyte.max);
-
-    // ubyte <- short
-    assert((cast(short) 0).to!ubyte == 0);
-    assert((cast(short) 1).to!ubyte == 1);
-    assert((cast(short) (ubyte.max - 1)).to!ubyte == ubyte.max - 1);
-    assert((cast(short) ubyte.max).to!ubyte == ubyte.max);
-
-    // short <-> int
-    assert(short.min.to!int == short.min);
-    assert((short.min + 1).to!int == short.min + 1);
-    assert((cast(short) -1).to!int == -1);
-    assert((cast(short) 0).to!int == 0);
-    assert((cast(short) 1).to!int == 1);
-    assert((short.max - 1).to!int == short.max - 1);
-    assert(short.max.to!int == short.max);
-
-    assert((cast(int) short.min).to!short == short.min);
-    assert((cast(int) short.min + 1).to!short == short.min + 1);
-    assert((cast(int) -1).to!short == -1);
-    assert((cast(int) 0).to!short == 0);
-    assert((cast(int) 1).to!short == 1);
-    assert((cast(int) short.max - 1).to!short == short.max - 1);
-    assert((cast(int) short.max).to!short == short.max);
-
-    // uint <-> int
-    assert((cast(uint) 0).to!int == 0);
-    assert((cast(uint) 1).to!int == 1);
-    assert((cast(uint) (int.max - 1)).to!int == int.max - 1);
-    assert((cast(uint) int.max).to!int == int.max);
-
-    assert((cast(int) 0).to!uint == 0);
-    assert((cast(int) 1).to!uint == 1);
-    assert((cast(int) (int.max - 1)).to!uint == int.max - 1);
-    assert((cast(int) int.max).to!uint == int.max);
-}
-
-private unittest
-{
-    ConvException exception;
-    try
-    {
-        assert(int.min.to!short == int.min);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-private unittest
-{
-    ConvException exception;
-    try
-    {
-        assert(int.max.to!short == int.max);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-private unittest
-{
-    ConvException exception;
-    try
-    {
-        assert(uint.max.to!ushort == ushort.max);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-private unittest
-{
-    ConvException exception;
-    try
-    {
-        assert((-1).to!uint == -1);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-private @nogc unittest
-{
-    enum Test : int
-    {
-        one,
-        two,
-    }
-    assert(Test.one.to!int == 0);
-    assert(Test.two.to!int == 1);
-}
-
-/**
- * Converts $(D_PARAM from) to a boolean.
- *
- * If $(D_PARAM From) is a numeric type, then `1` becomes $(D_KEYWORD true),
- * `0` $(D_KEYWORD false). Otherwise $(D_PSYMBOL ConvException) is thrown.
- *
- * If $(D_PARAM To) is a string (built-in string or $(D_PSYMBOL String)),
- * then `"true"` or `"false"` are converted to the appropriate boolean value.
- * Otherwise $(D_PSYMBOL ConvException) is thrown.
- *
- * Params:
- *  From = Source type.
- *  To   = Target type.
- *  from = Source value.
- *
- * Returns: $(D_KEYWORD from) converted to a boolean.
- *
- * Throws: $(D_PSYMBOL ConvException) if $(D_PARAM from) isn't convertible.
- */
-To to(To, From)(From from)
-if (isNumeric!From && is(Unqual!To == bool) && !is(Unqual!To == Unqual!From))
-{
-    if (from == 0)
-    {
-        return false;
-    }
-    else if (from < 0)
-    {
-        throw make!ConvException(defaultAllocator,
-                                 "Negative number overflow");
-    }
-    else if (from <= 1)
-    {
-        return true;
-    }
-    throw make!ConvException(defaultAllocator,
-                             "Positive number overflow");
-}
-
-///
-@nogc unittest
-{
-    assert(!0.0.to!bool);
-    assert(0.2.to!bool);
-    assert(0.5.to!bool);
-    assert(1.0.to!bool);
-
-    assert(!0.to!bool);
-    assert(1.to!bool);
-}
-
-private @nogc unittest
-{
-    ConvException exception;
-    try
-    {
-        assert((-1).to!bool);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-private @nogc unittest
-{
-    ConvException exception;
-    try
-    {
-        assert(2.to!bool);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-/// ditto
-To to(To, From)(auto ref const From from)
-if ((is(From == String) || isSomeString!From) && is(Unqual!To == bool))
-{
-    if (from == "true")
-    {
-        return true;
-    }
-    else if (from == "false")
-    {
-        return false;
-    }
-    throw make!ConvException(defaultAllocator,
-                             "String doesn't contain a boolean value");
-}
-
-///
-@nogc unittest
-{
-    assert("true".to!bool);
-    assert(!"false".to!bool);
-    assert(String("true").to!bool);
-    assert(!String("false").to!bool);
-
-}
-
-private @nogc unittest
-{
-    ConvException exception;
-    try
-    {
-        assert("1".to!bool);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-/**
- * Converts a boolean to $(D_PARAM To).
- *
- * If $(D_PARAM To) is a numeric type, then $(D_KEYWORD true) becomes `1`,
- * $(D_KEYWORD false) `0`.
- *
- * If $(D_PARAM To) is a $(D_PSYMBOL String), then `"true"` or `"false"`
- * is returned.
- *
- * Params:
- *  From = Source type.
- *  To   = Target type.
- *  from = Source value.
- *
- * Returns: $(D_PARAM from) converted to $(D_PARAM To).
- */
-To to(To, From)(const From from)
-if (is(Unqual!From == bool) && isNumeric!To && !is(Unqual!To == Unqual!From))
-{
-    return from;
-}
-
-///
-pure nothrow @safe @nogc unittest
-{
-    assert(true.to!float == 1.0);
-    assert(true.to!double == 1.0);
-    assert(true.to!ubyte == 1);
-    assert(true.to!byte == 1);
-    assert(true.to!ushort == 1);
-    assert(true.to!short == 1);
-    assert(true.to!uint == 1);
-    assert(true.to!int == 1);
-
-    assert(false.to!float == 0);
-    assert(false.to!double == 0);
-    assert(false.to!ubyte == 0);
-    assert(false.to!byte == 0);
-    assert(false.to!ushort == 0);
-    assert(false.to!short == 0);
-    assert(false.to!uint == 0);
-    assert(false.to!int == 0);
-}
-
-/// ditto
-To to(To, From)(const From from)
-if (is(Unqual!From == bool) && is(Unqual!To == String))
-{
-    return String(from ? "true" : "false");
-}
-
-///
-@nogc unittest
-{
-    assert(true.to!String == "true");
-    assert(false.to!String == "false");
-}
-
-private @nogc unittest
-{
-    static assert(is(typeof((const String("true")).to!bool)));
-    static assert(is(typeof(false.to!(const String) == "false")));
-}
-
-/**
- * Converts a floating point number to an integral type.
- *
- * Params:
- *  From = Source type.
- *  To   = Target type.
- *  from = Source value.
- *
- * Returns: Truncated $(D_PARAM from) (everything after the decimal point is
- *          dropped).
- *
- * Throws: $(D_PSYMBOL ConvException) if
- *         $(D_INLINECODE from < To.min || from > To.max).
- */
-To to(To, From)(From from)
-if (isFloatingPoint!From
- && isIntegral!To
- && !is(Unqual!To == Unqual!From)
- && !is(To == enum))
-{
-    if (from > To.max)
-    {
-        throw make!ConvException(defaultAllocator,
-                                 "Positive number overflow");
-    }
-    else if (from < To.min)
-    {
-        throw make!ConvException(defaultAllocator,
-                                 "Negative number overflow");
-    }
-    return cast(To) from;
-}
-
-///
-@nogc unittest
-{
-    assert(1.5.to!int == 1);
-    assert(2147483646.5.to!int == 2147483646);
-    assert((-2147483647.5).to!int == -2147483647);
-    assert(2147483646.5.to!uint == 2147483646);
-}
-
-private @nogc unittest
-{
-    ConvException exception;
-    try
-    {
-        assert(2147483647.5.to!int == 2147483647);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-private @nogc unittest
-{
-    ConvException exception;
-    try
-    {
-        assert((-2147483648.5).to!int == -2147483648);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-private @nogc unittest
-{
-    ConvException exception;
-    try
-    {
-        assert((-21474.5).to!uint == -21474);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-/**
- * Performs checked conversion from an integral type $(D_PARAM From) to an
- * $(D_KEYWORD enum).
- *
- * Params:
- *  From = Source type.
- *  To   = Target type.
- *  from = Source value.
- *
- * Returns: $(D_KEYWORD enum) value.
- *
- * Throws: $(D_PSYMBOL ConvException) if $(D_PARAM from) is not a member of
- *         $(D_PSYMBOL To).
- */
-To to(To, From)(From from)
-if (isIntegral!From && is(To == enum))
-{
-    foreach (m; EnumMembers!To)
-    {
-        if (from == m)
-        {
-            return m;
-        }
-    }
-    throw make!ConvException(defaultAllocator,
-                             "Value not found in enum '" ~ To.stringof ~ "'");
-}
-
-///
-@nogc unittest
-{
-    enum Test : int
-    {
-        one,
-        two,
-    }
-    static assert(is(typeof(1.to!Test) == Test));
-    assert(0.to!Test == Test.one);
-    assert(1.to!Test == Test.two);
-}
-
-private @nogc unittest
-{
-    enum Test : uint
-    {
-        one,
-        two,
-    }
-
-    ConvException exception;
-    try
-    {
-        assert(5.to!Test == Test.one);
-    }
-    catch (ConvException e)
-    {
-        exception = e;
-    }
-    assert(exception !is null);
-    defaultAllocator.dispose(exception);
-}
-
-// Returns the last part of buffer with converted number.
-package(tanya) char[] number2String(T)(const T number,
-                                       return ref char[21] buffer)
-if (isIntegral!T)
-{
-    // abs the integer.
-    ulong n64 = number < 0 ? -cast(long) number : number;
-
-    char* start = buffer[].ptr + buffer.sizeof - 1;
-
-    while (true)
-    {
-        // Do in 32-bit chunks (avoid lots of 64-bit divides even with constant
-        // denominators).
-        char* o = start - 8;
-        uint n;
-        if (n64 >= 100000000)
-        {
-            n = n64 % 100000000;
-            n64 /= 100000000;
-        }
-        else
-        {
-            n = cast(uint) n64;
-            n64 = 0;
-        }
-
-        while (n)
-        {
-            *--start = cast(char) (n % 10) + '0';
-            n /= 10;
-        }
-        // Ignore the leading zero if it was the last part of the integer.
-        if (n64 == 0)
-        {
-            if ((start[0] == '0')
-             && (start != (buffer[].ptr + buffer.sizeof -1)))
-            {
-                ++start;
-            }
-            break;
-        }
-        // Copy leading zeros if it wasn't the most significant part of the
-        // integer.
-        while (start != o)
-        {
-            *--start = '0';
-        }
-    }
-
-    // Get the length that we have copied.
-    uint l = cast(uint) ((buffer[].ptr + buffer.sizeof - 1) - start);
-    if (l == 0)
-    {
-        *--start = '0';
-        l = 1;
-    }
-    else if (number < 0) // Set the sign.
-    {
-        *--start = '-';
-        ++l;
-    }
-
-    return buffer[$ - l - 1 .. $ - 1];
-}
-
-// Converting an integer to string.
-private pure nothrow @system @nogc unittest
-{
-    char[21] buf;
-
-    assert(number2String(80, buf) == "80");
-    assert(number2String(-80, buf) == "-80");
-    assert(number2String(0, buf) == "0");
-    assert(number2String(uint.max, buf) == "4294967295");
-    assert(number2String(int.min, buf) == "-2147483648");
-}
--- a/source/tanya/hash/lookup.d
+++ b/source/tanya/hash/lookup.d
@ -0,0 +1,622 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Non-cryptographic, lookup hash functions.
+ *
+ * Copyright: Eugene Wissner 2018.
+ * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
+ *                  Mozilla Public License, v. 2.0).
+ * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
+ * Source: $(LINK2 https://github.com/caraus-ecms/tanya/blob/master/source/tanya/hash/lookup.d,
+ *                 tanya/hash/lookup.d)
+ */
+module tanya.hash.lookup;
+
+import tanya.meta.trait;
+import tanya.range.primitive;
+
+private struct FNV
+{
+    static if (size_t.sizeof == 4)
+    {
+        enum uint offsetBasis = 2166136261;
+        enum uint prime = 16777619;
+    }
+    else static if (size_t.sizeof == 8)
+    {
+        enum ulong offsetBasis = 14695981039346656037UL;
+        enum ulong prime = 1099511628211UL;
+    }
+    else
+    {
+        static assert(false, "FNV requires at least 32-bit hash length");
+    }
+
+    size_t hash = offsetBasis;
+
+    void opCall(T)(auto ref T key)
+    {
+        static if (is(typeof(key.toHash()) == size_t))
+        {
+            opCall(key.toHash()); // Combine user-defined hashes
+        }
+        else static if (isScalarType!T || isPointer!T)
+        {
+            (() @trusted => add((cast(const ubyte*) &key)[0 .. T.sizeof]))();
+        }
+        else static if (isArray!T && isScalarType!(ElementType!T))
+        {
+            add(cast(const ubyte[]) key);
+        }
+        else static if (is(T == typeof(null)))
+        {
+            add(key);
+        }
+        else static if (isInputRange!T && !isInfinite!T)
+        {
+            foreach (e; key)
+            {
+                opCall(e);
+            }
+        }
+        else
+        {
+            static assert(false, "Hash function is not available");
+        }
+    }
+
+    void add(const ubyte[] key) @nogc nothrow pure @safe
+    {
+        foreach (c; key)
+        {
+            this.hash = (this.hash ^ c) * prime;
+        }
+    }
+}
+
+/**
+ * Takes an a argument of an arbitrary type $(D_PARAM T) and calculates the hash value.
+ *
+ * Hash calculation is supported for all scalar types. Aggregate types, like
+ *$(D_KEYWORD struct)s should implement `toHash`-function:
+ * ---
+ * size_t toHash() const
+ * {
+ *  return hash;
+ * }
+ * ---
+ *
+ * For scalar types FNV-1a (Fowler-Noll-Vo) hash function is used internally.
+ * If the type provides a `toHash`-function, only `toHash()` is called and its
+ * result is returned.
+ *
+ * This function also accepts input ranges that contain hashable elements.
+ * Individual values are combined then and the resulting hash is returned.
+ *
+ * Params:
+ *  T = Hashable type.
+ *  key = Hashable value.
+ *
+ * Returns: Calculated hash value.
+ *
+ * See_Also: $(LINK http://www.isthe.com/chongo/tech/comp/fnv/).
+ */
+size_t hash(T)(auto ref T key)
+{
+    static if (is(typeof(key.toHash()) == size_t))
+    {
+        return key.toHash();
+    }
+    else
+    {
+        FNV fnv;
+        fnv(key);
+        return fnv.hash;
+    }
+}
+
+version (unittest)
+{
+    enum string r10(string x) = x ~ x ~ x ~ x ~ x ~ x ~ x ~ x ~ x ~ x;
+    enum string r100(string x) = r10!x ~ r10!x ~ r10!x ~ r10!x ~ r10!x
+                               ~ r10!x ~ r10!x ~ r10!x ~ r10!x ~ r10!x;
+    enum string r500(string x) = r100!x ~ r100!x ~ r100!x ~ r100!x ~ r100!x;
+
+    private struct ToHash
+    {
+        size_t toHash() const @nogc nothrow pure @safe
+        {
+            return 0;
+        }
+    }
+
+    private struct HashRange
+    {
+        string fo = "fo";
+
+        @property ubyte front() const @nogc nothrow pure @safe
+        {
+            return this.fo[0];
+        }
+
+        void popFront() @nogc nothrow pure @safe
+        {
+            this.fo = this.fo[1 .. $];
+        }
+
+        @property bool empty() const @nogc nothrow pure @safe
+        {
+            return this.fo.length == 0;
+        }
+    }
+
+    private struct ToHashRange
+    {
+        bool empty_;
+
+        @property ToHash front() const @nogc nothrow pure @safe
+        {
+            return ToHash();
+        }
+
+        void popFront() @nogc nothrow pure @safe
+        {
+            this.empty_ = true;
+        }
+
+         @property bool empty() const @nogc nothrow pure @safe
+         {
+             return this.empty_;
+         }
+    }
+}
+
+// Tests that work for any hash size
+@nogc nothrow pure @safe unittest
+{
+    assert(hash(null) == FNV.offsetBasis);
+    assert(hash(ToHash()) == 0U);
+}
+
+static if (size_t.sizeof == 4) @nogc nothrow pure @safe unittest
+{
+    assert(hash('a') == 0xe40c292cU);
+    assert(hash(HashRange()) == 0x6222e842U);
+    assert(hash(ToHashRange()) == 1268118805U);
+}
+static if (size_t.sizeof == 8) @nogc nothrow pure @safe unittest
+{
+    assert(hash('a') == 0xaf63dc4c8601ec8cUL);
+    assert(hash(HashRange()) == 0x08985907b541d342UL);
+    assert(hash(ToHashRange()) == 12161962213042174405UL);
+}
+
+static if (size_t.sizeof == 4) @nogc nothrow pure @system unittest
+{
+    assert(hash(cast(void*) 0x6e6f6863) == 0xac297727U);
+}
+static if (size_t.sizeof == 8) @nogc nothrow pure @system unittest
+{
+    assert(hash(cast(void*) 0x77206f676e6f6863) == 0xd1edd10b507344d0UL);
+}
+
+/*
+ * These are official FNV-1a test vectors and they are in the public domain.
+ */
+// FNV-1a 32 bit test vectors
+static if (size_t.sizeof == 4) @nogc nothrow pure @safe unittest
+{
+    assert(hash("") == 0x811c9dc5U);
+    assert(hash("a") == 0xe40c292cU);
+    assert(hash("b") == 0xe70c2de5U);
+    assert(hash("c") == 0xe60c2c52U);
+    assert(hash("d") == 0xe10c2473U);
+    assert(hash("e") == 0xe00c22e0U);
+    assert(hash("f") == 0xe30c2799U);
+    assert(hash("fo") == 0x6222e842U);
+    assert(hash("foo") == 0xa9f37ed7U);
+    assert(hash("foob") == 0x3f5076efU);
+    assert(hash("fooba") == 0x39aaa18aU);
+    assert(hash("foobar") == 0xbf9cf968U);
+    assert(hash("\0") == 0x050c5d1fU);
+    assert(hash("a\0") == 0x2b24d044U);
+    assert(hash("b\0") == 0x9d2c3f7fU);
+    assert(hash("c\0") == 0x7729c516U);
+    assert(hash("d\0") == 0xb91d6109U);
+    assert(hash("e\0") == 0x931ae6a0U);
+    assert(hash("f\0") == 0x052255dbU);
+    assert(hash("fo\0") == 0xbef39fe6U);
+    assert(hash("foo\0") == 0x6150ac75U);
+    assert(hash("foob\0") == 0x9aab3a3dU);
+    assert(hash("fooba\0") == 0x519c4c3eU);
+    assert(hash("foobar\0") == 0x0c1c9eb8U);
+    assert(hash("ch") == 0x5f299f4eU);
+    assert(hash("cho") == 0xef8580f3U);
+    assert(hash("chon") == 0xac297727U);
+    assert(hash("chong") == 0x4546b9c0U);
+    assert(hash("chongo") == 0xbd564e7dU);
+    assert(hash("chongo ") == 0x6bdd5c67U);
+    assert(hash("chongo w") == 0xdd77ed30U);
+    assert(hash("chongo wa") == 0xf4ca9683U);
+    assert(hash("chongo was") == 0x4aeb9bd0U);
+    assert(hash("chongo was ") == 0xe0e67ad0U);
+    assert(hash("chongo was h") == 0xc2d32fa8U);
+    assert(hash("chongo was he") == 0x7f743fb7U);
+    assert(hash("chongo was her") == 0x6900631fU);
+    assert(hash("chongo was here") == 0xc59c990eU);
+    assert(hash("chongo was here!") == 0x448524fdU);
+    assert(hash("chongo was here!\n") == 0xd49930d5U);
+    assert(hash("ch\0") == 0x1c85c7caU);
+    assert(hash("cho\0") == 0x0229fe89U);
+    assert(hash("chon\0") == 0x2c469265U);
+    assert(hash("chong\0") == 0xce566940U);
+    assert(hash("chongo\0") == 0x8bdd8ec7U);
+    assert(hash("chongo \0") == 0x34787625U);
+    assert(hash("chongo w\0") == 0xd3ca6290U);
+    assert(hash("chongo wa\0") == 0xddeaf039U);
+    assert(hash("chongo was\0") == 0xc0e64870U);
+    assert(hash("chongo was \0") == 0xdad35570U);
+    assert(hash("chongo was h\0") == 0x5a740578U);
+    assert(hash("chongo was he\0") == 0x5b004d15U);
+    assert(hash("chongo was her\0") == 0x6a9c09cdU);
+    assert(hash("chongo was here\0") == 0x2384f10aU);
+    assert(hash("chongo was here!\0") == 0xda993a47U);
+    assert(hash("chongo was here!\n\0") == 0x8227df4fU);
+    assert(hash("cu") == 0x4c298165U);
+    assert(hash("cur") == 0xfc563735U);
+    assert(hash("curd") == 0x8cb91483U);
+    assert(hash("curds") == 0x775bf5d0U);
+    assert(hash("curds ") == 0xd5c428d0U);
+    assert(hash("curds a") == 0x34cc0ea3U);
+    assert(hash("curds an") == 0xea3b4cb7U);
+    assert(hash("curds and") == 0x8e59f029U);
+    assert(hash("curds and ") == 0x2094de2bU);
+    assert(hash("curds and w") == 0xa65a0ad4U);
+    assert(hash("curds and wh") == 0x9bbee5f4U);
+    assert(hash("curds and whe") == 0xbe836343U);
+    assert(hash("curds and whey") == 0x22d5344eU);
+    assert(hash("curds and whey\n") == 0x19a1470cU);
+    assert(hash("cu\0") == 0x4a56b1ffU);
+    assert(hash("cur\0") == 0x70b8e86fU);
+    assert(hash("curd\0") == 0x0a5b4a39U);
+    assert(hash("curds\0") == 0xb5c3f670U);
+    assert(hash("curds \0") == 0x53cc3f70U);
+    assert(hash("curds a\0") == 0xc03b0a99U);
+    assert(hash("curds an\0") == 0x7259c415U);
+    assert(hash("curds and\0") == 0x4095108bU);
+    assert(hash("curds and \0") == 0x7559bdb1U);
+    assert(hash("curds and w\0") == 0xb3bf0bbcU);
+    assert(hash("curds and wh\0") == 0x2183ff1cU);
+    assert(hash("curds and whe\0") == 0x2bd54279U);
+    assert(hash("curds and whey\0") == 0x23a156caU);
+    assert(hash("curds and whey\n\0") == 0x64e2d7e4U);
+    assert(hash("hi") == 0x683af69aU);
+    assert(hash("hi\0") == 0xaed2346eU);
+    assert(hash("hello") == 0x4f9f2cabU);
+    assert(hash("hello\0") == 0x02935131U);
+    assert(hash("\xff\x00\x00\x01") == 0xc48fb86dU);
+    assert(hash("\x01\x00\x00\xff") == 0x2269f369U);
+    assert(hash("\xff\x00\x00\x02") == 0xc18fb3b4U);
+    assert(hash("\x02\x00\x00\xff") == 0x50ef1236U);
+    assert(hash("\xff\x00\x00\x03") == 0xc28fb547U);
+    assert(hash("\x03\x00\x00\xff") == 0x96c3bf47U);
+    assert(hash("\xff\x00\x00\x04") == 0xbf8fb08eU);
+    assert(hash("\x04\x00\x00\xff") == 0xf3e4d49cU);
+    assert(hash("\x40\x51\x4e\x44") == 0x32179058U);
+    assert(hash("\x44\x4e\x51\x40") == 0x280bfee6U);
+    assert(hash("\x40\x51\x4e\x4a") == 0x30178d32U);
+    assert(hash("\x4a\x4e\x51\x40") == 0x21addaf8U);
+    assert(hash("\x40\x51\x4e\x54") == 0x4217a988U);
+    assert(hash("\x54\x4e\x51\x40") == 0x772633d6U);
+    assert(hash("127.0.0.1") == 0x08a3d11eU);
+    assert(hash("127.0.0.1\0") == 0xb7e2323aU);
+    assert(hash("127.0.0.2") == 0x07a3cf8bU);
+    assert(hash("127.0.0.2\0") == 0x91dfb7d1U);
+    assert(hash("127.0.0.3") == 0x06a3cdf8U);
+    assert(hash("127.0.0.3\0") == 0x6bdd3d68U);
+    assert(hash("64.81.78.68") == 0x1d5636a7U);
+    assert(hash("64.81.78.68\0") == 0xd5b808e5U);
+    assert(hash("64.81.78.74") == 0x1353e852U);
+    assert(hash("64.81.78.74\0") == 0xbf16b916U);
+    assert(hash("64.81.78.84") == 0xa55b89edU);
+    assert(hash("64.81.78.84\0") == 0x3c1a2017U);
+    assert(hash("feedface") == 0x0588b13cU);
+    assert(hash("feedface\0") == 0xf22f0174U);
+    assert(hash("feedfacedaffdeed") == 0xe83641e1U);
+    assert(hash("feedfacedaffdeed\0") == 0x6e69b533U);
+    assert(hash("feedfacedeadbeef") == 0xf1760448U);
+    assert(hash("feedfacedeadbeef\0") == 0x64c8bd58U);
+    assert(hash("line 1\nline 2\nline 3") == 0x97b4ea23U);
+    assert(hash("chongo <Landon Curt Noll> /\\../\\") == 0x9a4e92e6U);
+    assert(hash("chongo <Landon Curt Noll> /\\../\\\0") == 0xcfb14012U);
+    assert(hash("chongo (Landon Curt Noll) /\\../\\") == 0xf01b2511U);
+    assert(hash("chongo (Landon Curt Noll) /\\../\\\0") == 0x0bbb59c3U);
+    assert(hash("http://antwrp.gsfc.nasa.gov/apod/astropix.html") == 0xce524afaU);
+    assert(hash("http://en.wikipedia.org/wiki/Fowler_Noll_Vo_hash") == 0xdd16ef45U);
+    assert(hash("http://epod.usra.edu/") == 0x60648bb3U);
+    assert(hash("http://exoplanet.eu/") == 0x7fa4bcfcU);
+    assert(hash("http://hvo.wr.usgs.gov/cam3/") == 0x5053ae17U);
+    assert(hash("http://hvo.wr.usgs.gov/cams/HMcam/") == 0xc9302890U);
+    assert(hash("http://hvo.wr.usgs.gov/kilauea/update/deformation.html") == 0x956ded32U);
+    assert(hash("http://hvo.wr.usgs.gov/kilauea/update/images.html") == 0x9136db84U);
+    assert(hash("http://hvo.wr.usgs.gov/kilauea/update/maps.html") == 0xdf9d3323U);
+    assert(hash("http://hvo.wr.usgs.gov/volcanowatch/current_issue.html") == 0x32bb6cd0U);
+    assert(hash("http://neo.jpl.nasa.gov/risk/") == 0xc8f8385bU);
+    assert(hash("http://norvig.com/21-days.html") == 0xeb08bfbaU);
+    assert(hash("http://primes.utm.edu/curios/home.php") == 0x62cc8e3dU);
+    assert(hash("http://slashdot.org/") == 0xc3e20f5cU);
+    assert(hash("http://tux.wr.usgs.gov/Maps/155.25-19.5.html") == 0x39e97f17U);
+    assert(hash("http://volcano.wr.usgs.gov/kilaueastatus.php") == 0x7837b203U);
+    assert(hash("http://www.avo.alaska.edu/activity/Redoubt.php") == 0x319e877bU);
+    assert(hash("http://www.dilbert.com/fast/") == 0xd3e63f89U);
+    assert(hash("http://www.fourmilab.ch/gravitation/orbits/") == 0x29b50b38U);
+    assert(hash("http://www.fpoa.net/") == 0x5ed678b8U);
+    assert(hash("http://www.ioccc.org/index.html") == 0xb0d5b793U);
+    assert(hash("http://www.isthe.com/cgi-bin/number.cgi") == 0x52450be5U);
+    assert(hash("http://www.isthe.com/chongo/bio.html") == 0xfa72d767U);
+    assert(hash("http://www.isthe.com/chongo/index.html") == 0x95066709U);
+    assert(hash("http://www.isthe.com/chongo/src/calc/lucas-calc") == 0x7f52e123U);
+    assert(hash("http://www.isthe.com/chongo/tech/astro/venus2004.html") == 0x76966481U);
+    assert(hash("http://www.isthe.com/chongo/tech/astro/vita.html") == 0x063258b0U);
+    assert(hash("http://www.isthe.com/chongo/tech/comp/c/expert.html") == 0x2ded6e8aU);
+    assert(hash("http://www.isthe.com/chongo/tech/comp/calc/index.html") == 0xb07d7c52U);
+    assert(hash("http://www.isthe.com/chongo/tech/comp/fnv/index.html") == 0xd0c71b71U);
+    assert(hash("http://www.isthe.com/chongo/tech/math/number/howhigh.html") == 0xf684f1bdU);
+    assert(hash("http://www.isthe.com/chongo/tech/math/number/number.html") == 0x868ecfa8U);
+    assert(hash("http://www.isthe.com/chongo/tech/math/prime/mersenne.html") == 0xf794f684U);
+    assert(hash("http://www.isthe.com/chongo/tech/math/prime/mersenne.html#largest") == 0xd19701c3U);
+    assert(hash("http://www.lavarnd.org/cgi-bin/corpspeak.cgi") == 0x346e171eU);
+    assert(hash("http://www.lavarnd.org/cgi-bin/haiku.cgi") == 0x91f8f676U);
+    assert(hash("http://www.lavarnd.org/cgi-bin/rand-none.cgi") == 0x0bf58848U);
+    assert(hash("http://www.lavarnd.org/cgi-bin/randdist.cgi") == 0x6317b6d1U);
+    assert(hash("http://www.lavarnd.org/index.html") == 0xafad4c54U);
+    assert(hash("http://www.lavarnd.org/what/nist-test.html") == 0x0f25681eU);
+    assert(hash("http://www.macosxhints.com/") == 0x91b18d49U);
+    assert(hash("http://www.mellis.com/") == 0x7d61c12eU);
+    assert(hash("http://www.nature.nps.gov/air/webcams/parks/havoso2alert/havoalert.cfm") == 0x5147d25cU);
+    assert(hash("http://www.nature.nps.gov/air/webcams/parks/havoso2alert/timelines_24.cfm") == 0x9a8b6805U);
+    assert(hash("http://www.paulnoll.com/") == 0x4cd2a447U);
+    assert(hash("http://www.pepysdiary.com/") == 0x1e549b14U);
+    assert(hash("http://www.sciencenews.org/index/home/activity/view") == 0x2fe1b574U);
+    assert(hash("http://www.skyandtelescope.com/") == 0xcf0cd31eU);
+    assert(hash("http://www.sput.nl/~rob/sirius.html") == 0x6c471669U);
+    assert(hash("http://www.systemexperts.com/") == 0x0e5eef1eU);
+    assert(hash("http://www.tq-international.com/phpBB3/index.php") == 0x2bed3602U);
+    assert(hash("http://www.travelquesttours.com/index.htm") == 0xb26249e0U);
+    assert(hash("http://www.wunderground.com/global/stations/89606.html") == 0x2c9b86a4U);
+    assert(hash(r10!"21701") == 0xe415e2bbU);
+    assert(hash(r10!"M21701") == 0x18a98d1dU);
+    assert(hash(r10!"2^21701-1") == 0xb7df8b7bU);
+    assert(hash(r10!"\x54\xc5") == 0x241e9075U);
+    assert(hash(r10!"\xc5\x54") == 0x063f70ddU);
+    assert(hash(r10!"23209") == 0x0295aed9U);
+    assert(hash(r10!"M23209") == 0x56a7f781U);
+    assert(hash(r10!"2^23209-1") == 0x253bc645U);
+    assert(hash(r10!"\x5a\xa9") == 0x46610921U);
+    assert(hash(r10!"\xa9\x5a") == 0x7c1577f9U);
+    assert(hash(r10!"391581216093") == 0x512b2851U);
+    assert(hash(r10!"391581*2^216093-1") == 0x76823999U);
+    assert(hash(r10!"\x05\xf9\x9d\x03\x4c\x81") == 0xc0586935U);
+    assert(hash(r10!"FEDCBA9876543210") == 0xf3415c85U);
+    assert(hash(r10!"\xfe\xdc\xba\x98\x76\x54\x32\x10") == 0x0ae4ff65U);
+    assert(hash(r10!"EFCDAB8967452301") == 0x58b79725U);
+    assert(hash(r10!"\xef\xcd\xab\x89\x67\x45\x23\x01") == 0xdea43aa5U);
+    assert(hash(r10!"0123456789ABCDEF") == 0x2bb3be35U);
+    assert(hash(r10!"\x01\x23\x45\x67\x89\xab\xcd\xef") == 0xea777a45U);
+    assert(hash(r10!"1032547698BADCFE") == 0x8f21c305U);
+    assert(hash(r10!"\x10\x32\x54\x76\x98\xba\xdc\xfe") == 0x5c9d0865U);
+    assert(hash(r500!"\x00") == 0xfa823dd5U);
+    assert(hash(r500!"\x07") == 0x21a27271U);
+    assert(hash(r500!"~") == 0x83c5c6d5U);
+    assert(hash(r500!"\x7f") == 0x813b0881U);
+}
+
+// FNV-1a 64 bit test vectors
+static if (size_t.sizeof == 8) @nogc nothrow pure @safe unittest
+{
+    assert(hash("") == 0xcbf29ce484222325UL);
+    assert(hash("a") == 0xaf63dc4c8601ec8cUL);
+    assert(hash("b") == 0xaf63df4c8601f1a5UL);
+    assert(hash("c") == 0xaf63de4c8601eff2UL);
+    assert(hash("d") == 0xaf63d94c8601e773UL);
+    assert(hash("e") == 0xaf63d84c8601e5c0UL);
+    assert(hash("f") == 0xaf63db4c8601ead9UL);
+    assert(hash("fo") == 0x08985907b541d342UL);
+    assert(hash("foo") == 0xdcb27518fed9d577UL);
+    assert(hash("foob") == 0xdd120e790c2512afUL);
+    assert(hash("fooba") == 0xcac165afa2fef40aUL);
+    assert(hash("foobar") == 0x85944171f73967e8UL);
+    assert(hash("\0") == 0xaf63bd4c8601b7dfUL);
+    assert(hash("a\0") == 0x089be207b544f1e4UL);
+    assert(hash("b\0") == 0x08a61407b54d9b5fUL);
+    assert(hash("c\0") == 0x08a2ae07b54ab836UL);
+    assert(hash("d\0") == 0x0891b007b53c4869UL);
+    assert(hash("e\0") == 0x088e4a07b5396540UL);
+    assert(hash("f\0") == 0x08987c07b5420ebbUL);
+    assert(hash("fo\0") == 0xdcb28a18fed9f926UL);
+    assert(hash("foo\0") == 0xdd1270790c25b935UL);
+    assert(hash("foob\0") == 0xcac146afa2febf5dUL);
+    assert(hash("fooba\0") == 0x8593d371f738acfeUL);
+    assert(hash("foobar\0") == 0x34531ca7168b8f38UL);
+    assert(hash("ch") == 0x08a25607b54a22aeUL);
+    assert(hash("cho") == 0xf5faf0190cf90df3UL);
+    assert(hash("chon") == 0xf27397910b3221c7UL);
+    assert(hash("chong") == 0x2c8c2b76062f22e0UL);
+    assert(hash("chongo") == 0xe150688c8217b8fdUL);
+    assert(hash("chongo ") == 0xf35a83c10e4f1f87UL);
+    assert(hash("chongo w") == 0xd1edd10b507344d0UL);
+    assert(hash("chongo wa") == 0x2a5ee739b3ddb8c3UL);
+    assert(hash("chongo was") == 0xdcfb970ca1c0d310UL);
+    assert(hash("chongo was ") == 0x4054da76daa6da90UL);
+    assert(hash("chongo was h") == 0xf70a2ff589861368UL);
+    assert(hash("chongo was he") == 0x4c628b38aed25f17UL);
+    assert(hash("chongo was her") == 0x9dd1f6510f78189fUL);
+    assert(hash("chongo was here") == 0xa3de85bd491270ceUL);
+    assert(hash("chongo was here!") == 0x858e2fa32a55e61dUL);
+    assert(hash("chongo was here!\n") == 0x46810940eff5f915UL);
+    assert(hash("ch\0") == 0xf5fadd190cf8edaaUL);
+    assert(hash("cho\0") == 0xf273ed910b32b3e9UL);
+    assert(hash("chon\0") == 0x2c8c5276062f6525UL);
+    assert(hash("chong\0") == 0xe150b98c821842a0UL);
+    assert(hash("chongo\0") == 0xf35aa3c10e4f55e7UL);
+    assert(hash("chongo \0") == 0xd1ed680b50729265UL);
+    assert(hash("chongo w\0") == 0x2a5f0639b3dded70UL);
+    assert(hash("chongo wa\0") == 0xdcfbaa0ca1c0f359UL);
+    assert(hash("chongo was\0") == 0x4054ba76daa6a430UL);
+    assert(hash("chongo was \0") == 0xf709c7f5898562b0UL);
+    assert(hash("chongo was h\0") == 0x4c62e638aed2f9b8UL);
+    assert(hash("chongo was he\0") == 0x9dd1a8510f779415UL);
+    assert(hash("chongo was her\0") == 0xa3de2abd4911d62dUL);
+    assert(hash("chongo was here\0") == 0x858e0ea32a55ae0aUL);
+    assert(hash("chongo was here!\0") == 0x46810f40eff60347UL);
+    assert(hash("chongo was here!\n\0") == 0xc33bce57bef63eafUL);
+    assert(hash("cu") == 0x08a24307b54a0265UL);
+    assert(hash("cur") == 0xf5b9fd190cc18d15UL);
+    assert(hash("curd") == 0x4c968290ace35703UL);
+    assert(hash("curds") == 0x07174bd5c64d9350UL);
+    assert(hash("curds ") == 0x5a294c3ff5d18750UL);
+    assert(hash("curds a") == 0x05b3c1aeb308b843UL);
+    assert(hash("curds an") == 0xb92a48da37d0f477UL);
+    assert(hash("curds and") == 0x73cdddccd80ebc49UL);
+    assert(hash("curds and ") == 0xd58c4c13210a266bUL);
+    assert(hash("curds and w") == 0xe78b6081243ec194UL);
+    assert(hash("curds and wh") == 0xb096f77096a39f34UL);
+    assert(hash("curds and whe") == 0xb425c54ff807b6a3UL);
+    assert(hash("curds and whey") == 0x23e520e2751bb46eUL);
+    assert(hash("curds and whey\n") == 0x1a0b44ccfe1385ecUL);
+    assert(hash("cu\0") == 0xf5ba4b190cc2119fUL);
+    assert(hash("cur\0") == 0x4c962690ace2baafUL);
+    assert(hash("curd\0") == 0x0716ded5c64cda19UL);
+    assert(hash("curds\0") == 0x5a292c3ff5d150f0UL);
+    assert(hash("curds \0") == 0x05b3e0aeb308ecf0UL);
+    assert(hash("curds a\0") == 0xb92a5eda37d119d9UL);
+    assert(hash("curds an\0") == 0x73ce41ccd80f6635UL);
+    assert(hash("curds and\0") == 0xd58c2c132109f00bUL);
+    assert(hash("curds and \0") == 0xe78baf81243f47d1UL);
+    assert(hash("curds and w\0") == 0xb0968f7096a2ee7cUL);
+    assert(hash("curds and wh\0") == 0xb425a84ff807855cUL);
+    assert(hash("curds and whe\0") == 0x23e4e9e2751b56f9UL);
+    assert(hash("curds and whey\0") == 0x1a0b4eccfe1396eaUL);
+    assert(hash("curds and whey\n\0") == 0x54abd453bb2c9004UL);
+    assert(hash("hi") == 0x08ba5f07b55ec3daUL);
+    assert(hash("hi\0") == 0x337354193006cb6eUL);
+    assert(hash("hello") == 0xa430d84680aabd0bUL);
+    assert(hash("hello\0") == 0xa9bc8acca21f39b1UL);
+    assert(hash("\xff\x00\x00\x01") == 0x6961196491cc682dUL);
+    assert(hash("\x01\x00\x00\xff") == 0xad2bb1774799dfe9UL);
+    assert(hash("\xff\x00\x00\x02") == 0x6961166491cc6314UL);
+    assert(hash("\x02\x00\x00\xff") == 0x8d1bb3904a3b1236UL);
+    assert(hash("\xff\x00\x00\x03") == 0x6961176491cc64c7UL);
+    assert(hash("\x03\x00\x00\xff") == 0xed205d87f40434c7UL);
+    assert(hash("\xff\x00\x00\x04") == 0x6961146491cc5faeUL);
+    assert(hash("\x04\x00\x00\xff") == 0xcd3baf5e44f8ad9cUL);
+    assert(hash("\x40\x51\x4e\x44") == 0xe3b36596127cd6d8UL);
+    assert(hash("\x44\x4e\x51\x40") == 0xf77f1072c8e8a646UL);
+    assert(hash("\x40\x51\x4e\x4a") == 0xe3b36396127cd372UL);
+    assert(hash("\x4a\x4e\x51\x40") == 0x6067dce9932ad458UL);
+    assert(hash("\x40\x51\x4e\x54") == 0xe3b37596127cf208UL);
+    assert(hash("\x54\x4e\x51\x40") == 0x4b7b10fa9fe83936UL);
+    assert(hash("127.0.0.1") == 0xaabafe7104d914beUL);
+    assert(hash("127.0.0.1\0") == 0xf4d3180b3cde3edaUL);
+    assert(hash("127.0.0.2") == 0xaabafd7104d9130bUL);
+    assert(hash("127.0.0.2\0") == 0xf4cfb20b3cdb5bb1UL);
+    assert(hash("127.0.0.3") == 0xaabafc7104d91158UL);
+    assert(hash("127.0.0.3\0") == 0xf4cc4c0b3cd87888UL);
+    assert(hash("64.81.78.68") == 0xe729bac5d2a8d3a7UL);
+    assert(hash("64.81.78.68\0") == 0x74bc0524f4dfa4c5UL);
+    assert(hash("64.81.78.74") == 0xe72630c5d2a5b352UL);
+    assert(hash("64.81.78.74\0") == 0x6b983224ef8fb456UL);
+    assert(hash("64.81.78.84") == 0xe73042c5d2ae266dUL);
+    assert(hash("64.81.78.84\0") == 0x8527e324fdeb4b37UL);
+    assert(hash("feedface") == 0x0a83c86fee952abcUL);
+    assert(hash("feedface\0") == 0x7318523267779d74UL);
+    assert(hash("feedfacedaffdeed") == 0x3e66d3d56b8caca1UL);
+    assert(hash("feedfacedaffdeed\0") == 0x956694a5c0095593UL);
+    assert(hash("feedfacedeadbeef") == 0xcac54572bb1a6fc8UL);
+    assert(hash("feedfacedeadbeef\0") == 0xa7a4c9f3edebf0d8UL);
+    assert(hash("line 1\nline 2\nline 3") == 0x7829851fac17b143UL);
+    assert(hash("chongo <Landon Curt Noll> /\\../\\") == 0x2c8f4c9af81bcf06UL);
+    assert(hash("chongo <Landon Curt Noll> /\\../\\\0") == 0xd34e31539740c732UL);
+    assert(hash("chongo (Landon Curt Noll) /\\../\\") == 0x3605a2ac253d2db1UL);
+    assert(hash("chongo (Landon Curt Noll) /\\../\\\0") == 0x08c11b8346f4a3c3UL);
+    assert(hash("http://antwrp.gsfc.nasa.gov/apod/astropix.html") == 0x6be396289ce8a6daUL);
+    assert(hash("http://en.wikipedia.org/wiki/Fowler_Noll_Vo_hash") == 0xd9b957fb7fe794c5UL);
+    assert(hash("http://epod.usra.edu/") == 0x05be33da04560a93UL);
+    assert(hash("http://exoplanet.eu/") == 0x0957f1577ba9747cUL);
+    assert(hash("http://hvo.wr.usgs.gov/cam3/") == 0xda2cc3acc24fba57UL);
+    assert(hash("http://hvo.wr.usgs.gov/cams/HMcam/") == 0x74136f185b29e7f0UL);
+    assert(hash("http://hvo.wr.usgs.gov/kilauea/update/deformation.html") == 0xb2f2b4590edb93b2UL);
+    assert(hash("http://hvo.wr.usgs.gov/kilauea/update/images.html") == 0xb3608fce8b86ae04UL);
+    assert(hash("http://hvo.wr.usgs.gov/kilauea/update/maps.html") == 0x4a3a865079359063UL);
+    assert(hash("http://hvo.wr.usgs.gov/volcanowatch/current_issue.html") == 0x5b3a7ef496880a50UL);
+    assert(hash("http://neo.jpl.nasa.gov/risk/") == 0x48fae3163854c23bUL);
+    assert(hash("http://norvig.com/21-days.html") == 0x07aaa640476e0b9aUL);
+    assert(hash("http://primes.utm.edu/curios/home.php") == 0x2f653656383a687dUL);
+    assert(hash("http://slashdot.org/") == 0xa1031f8e7599d79cUL);
+    assert(hash("http://tux.wr.usgs.gov/Maps/155.25-19.5.html") == 0xa31908178ff92477UL);
+    assert(hash("http://volcano.wr.usgs.gov/kilaueastatus.php") == 0x097edf3c14c3fb83UL);
+    assert(hash("http://www.avo.alaska.edu/activity/Redoubt.php") == 0xb51ca83feaa0971bUL);
+    assert(hash("http://www.dilbert.com/fast/") == 0xdd3c0d96d784f2e9UL);
+    assert(hash("http://www.fourmilab.ch/gravitation/orbits/") == 0x86cd26a9ea767d78UL);
+    assert(hash("http://www.fpoa.net/") == 0xe6b215ff54a30c18UL);
+    assert(hash("http://www.ioccc.org/index.html") == 0xec5b06a1c5531093UL);
+    assert(hash("http://www.isthe.com/cgi-bin/number.cgi") == 0x45665a929f9ec5e5UL);
+    assert(hash("http://www.isthe.com/chongo/bio.html") == 0x8c7609b4a9f10907UL);
+    assert(hash("http://www.isthe.com/chongo/index.html") == 0x89aac3a491f0d729UL);
+    assert(hash("http://www.isthe.com/chongo/src/calc/lucas-calc") == 0x32ce6b26e0f4a403UL);
+    assert(hash("http://www.isthe.com/chongo/tech/astro/venus2004.html") == 0x614ab44e02b53e01UL);
+    assert(hash("http://www.isthe.com/chongo/tech/astro/vita.html") == 0xfa6472eb6eef3290UL);
+    assert(hash("http://www.isthe.com/chongo/tech/comp/c/expert.html") == 0x9e5d75eb1948eb6aUL);
+    assert(hash("http://www.isthe.com/chongo/tech/comp/calc/index.html") == 0xb6d12ad4a8671852UL);
+    assert(hash("http://www.isthe.com/chongo/tech/comp/fnv/index.html") == 0x88826f56eba07af1UL);
+    assert(hash("http://www.isthe.com/chongo/tech/math/number/howhigh.html") == 0x44535bf2645bc0fdUL);
+    assert(hash("http://www.isthe.com/chongo/tech/math/number/number.html") == 0x169388ffc21e3728UL);
+    assert(hash("http://www.isthe.com/chongo/tech/math/prime/mersenne.html") == 0xf68aac9e396d8224UL);
+    assert(hash("http://www.isthe.com/chongo/tech/math/prime/mersenne.html#largest") == 0x8e87d7e7472b3883UL);
+    assert(hash("http://www.lavarnd.org/cgi-bin/corpspeak.cgi") == 0x295c26caa8b423deUL);
+    assert(hash("http://www.lavarnd.org/cgi-bin/haiku.cgi") == 0x322c814292e72176UL);
+    assert(hash("http://www.lavarnd.org/cgi-bin/rand-none.cgi") == 0x8a06550eb8af7268UL);
+    assert(hash("http://www.lavarnd.org/cgi-bin/randdist.cgi") == 0xef86d60e661bcf71UL);
+    assert(hash("http://www.lavarnd.org/index.html") == 0x9e5426c87f30ee54UL);
+    assert(hash("http://www.lavarnd.org/what/nist-test.html") == 0xf1ea8aa826fd047eUL);
+    assert(hash("http://www.macosxhints.com/") == 0x0babaf9a642cb769UL);
+    assert(hash("http://www.mellis.com/") == 0x4b3341d4068d012eUL);
+    assert(hash("http://www.nature.nps.gov/air/webcams/parks/havoso2alert/havoalert.cfm") == 0xd15605cbc30a335cUL);
+    assert(hash("http://www.nature.nps.gov/air/webcams/parks/havoso2alert/timelines_24.cfm") == 0x5b21060aed8412e5UL);
+    assert(hash("http://www.paulnoll.com/") == 0x45e2cda1ce6f4227UL);
+    assert(hash("http://www.pepysdiary.com/") == 0x50ae3745033ad7d4UL);
+    assert(hash("http://www.sciencenews.org/index/home/activity/view") == 0xaa4588ced46bf414UL);
+    assert(hash("http://www.skyandtelescope.com/") == 0xc1b0056c4a95467eUL);
+    assert(hash("http://www.sput.nl/~rob/sirius.html") == 0x56576a71de8b4089UL);
+    assert(hash("http://www.systemexperts.com/") == 0xbf20965fa6dc927eUL);
+    assert(hash("http://www.tq-international.com/phpBB3/index.php") == 0x569f8383c2040882UL);
+    assert(hash("http://www.travelquesttours.com/index.htm") == 0xe1e772fba08feca0UL);
+    assert(hash("http://www.wunderground.com/global/stations/89606.html") == 0x4ced94af97138ac4UL);
+    assert(hash(r10!"21701") == 0xc4112ffb337a82fbUL);
+    assert(hash(r10!"M21701") == 0xd64a4fd41de38b7dUL);
+    assert(hash(r10!"2^21701-1") == 0x4cfc32329edebcbbUL);
+    assert(hash(r10!"\x54\xc5") == 0x0803564445050395UL);
+    assert(hash(r10!"\xc5\x54") == 0xaa1574ecf4642ffdUL);
+    assert(hash(r10!"23209") == 0x694bc4e54cc315f9UL);
+    assert(hash(r10!"M23209") == 0xa3d7cb273b011721UL);
+    assert(hash(r10!"2^23209-1") == 0x577c2f8b6115bfa5UL);
+    assert(hash(r10!"\x5a\xa9") == 0xb7ec8c1a769fb4c1UL);
+    assert(hash(r10!"\xa9\x5a") == 0x5d5cfce63359ab19UL);
+    assert(hash(r10!"391581216093") == 0x33b96c3cd65b5f71UL);
+    assert(hash(r10!"391581*2^216093-1") == 0xd845097780602bb9UL);
+    assert(hash(r10!"\x05\xf9\x9d\x03\x4c\x81") == 0x84d47645d02da3d5UL);
+    assert(hash(r10!"FEDCBA9876543210") == 0x83544f33b58773a5UL);
+    assert(hash(r10!"\xfe\xdc\xba\x98\x76\x54\x32\x10") == 0x9175cbb2160836c5UL);
+    assert(hash(r10!"EFCDAB8967452301") == 0xc71b3bc175e72bc5UL);
+    assert(hash(r10!"\xef\xcd\xab\x89\x67\x45\x23\x01") == 0x636806ac222ec985UL);
+    assert(hash(r10!"0123456789ABCDEF") == 0xb6ef0e6950f52ed5UL);
+    assert(hash(r10!"\x01\x23\x45\x67\x89\xab\xcd\xef") == 0xead3d8a0f3dfdaa5UL);
+    assert(hash(r10!"1032547698BADCFE") == 0x922908fe9a861ba5UL);
+    assert(hash(r10!"\x10\x32\x54\x76\x98\xba\xdc\xfe") == 0x6d4821de275fd5c5UL);
+    assert(hash(r500!"\x00") == 0x1fe3fce62bd816b5UL);
+    assert(hash(r500!"\x07") == 0xc23e9fccd6f70591UL);
+    assert(hash(r500!"~") == 0xc1af12bdfe16b5b5UL);
+    assert(hash(r500!"\x7f") == 0x39e9f18f2f85e221UL);
+}
--- a/source/tanya/hash/package.d
+++ b/source/tanya/hash/package.d
@ -0,0 +1,15 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Copyright: Eugene Wissner 2018.
+ * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
+ *                  Mozilla Public License, v. 2.0).
+ * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
+ * Source: $(LINK2 https://github.com/caraus-ecms/tanya/blob/master/source/tanya/hash/package.d,
+ *                 tanya/hash/package.d)
+ */
+module tanya.hash;
+
+public import tanya.hash.lookup;
--- a/source/tanya/math/mp.d
+++ b/source/tanya/math/mp.d
@ -14,11 +14,14 @@
 */
 module tanya.math.mp;

-import std.algorithm;
+import std.algorithm.comparison;
+import std.algorithm.mutation : copy, fill, reverse;
 import std.range;
+import tanya.algorithm.mutation;
 import tanya.container.array;
 import tanya.encoding.ascii;
 import tanya.memory;
+static import tanya.memory.op;
 import tanya.meta.trait;
 import tanya.meta.transform;

@ -104,12 +107,12 @@ struct Integer
    }

    /// ditto
-    this(shared Allocator allocator) pure nothrow @safe @nogc
+    this(shared Allocator allocator) @nogc nothrow pure @safe
    in
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.allocator_ = allocator;
    }
@ -156,7 +159,7 @@ struct Integer
    }

    ///
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        ubyte[8] range = [ 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xdd, 0xee ];
        auto integer = Integer(Sign.positive, range[]);
@ -187,7 +190,7 @@ struct Integer
    }

    ///
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        {
            ubyte[8] range = [ 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xdd, 0xee ];
@ -204,17 +207,17 @@ struct Integer
    /**
     * Copies the integer.
     */
-    this(this) nothrow @trusted @nogc
+    this(this) @nogc nothrow pure @safe
    {
        auto tmp = allocator.resize!digit(null, this.size);
-        this.rep[0 .. this.size].copy(tmp);
+        tanya.memory.op.copy(this.rep[0 .. this.size], tmp);
        this.rep = tmp;
    }

    /**
     * Destroys the integer.
     */
-    ~this() nothrow @trusted @nogc
+    ~this() @nogc nothrow pure @safe
    {
        allocator.resize(this.rep, 0);
    }
@ -224,7 +227,7 @@ struct Integer
    ];

    // Counts the number of LSBs before the first non-zero bit.
-    private ptrdiff_t countLSBs() const pure nothrow @safe @nogc
+    private ptrdiff_t countLSBs() const @nogc nothrow pure @safe
    {
        if (this.size == 0)
        {
@ -256,7 +259,7 @@ struct Integer
    /**
     * Returns: Number of bytes in the two's complement representation.
     */
-    @property size_t length() const pure nothrow @safe @nogc
+    @property size_t length() const @nogc nothrow pure @safe
    {
        if (this.sign)
        {
@ -280,7 +283,7 @@ struct Integer
    }

    ///
-    private nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        {
            Integer i;
@ -336,11 +339,12 @@ struct Integer
    }

    /// ditto
-    ref Integer opAssign(T)(ref T value) @trusted
+    ref Integer opAssign(T)(ref T value)
    if (is(Unqual!T == Integer))
    {
        this.rep = allocator.resize(this.rep, value.size);
-        value.rep[0 .. value.size].copy(this.rep[0 .. value.size]);
+        tanya.memory.op.copy(value.rep[0 .. value.size],
+                             this.rep[0 .. value.size]);
        this.size = value.size;
        this.sign = value.sign;

@ -348,7 +352,7 @@ struct Integer
    }

    /// ditto
-    ref Integer opAssign(T)(T value) nothrow @safe @nogc
+    ref Integer opAssign(T)(T value)
    if (is(T == Integer))
    {
        swap(this.rep, value.rep);
@ -389,11 +393,13 @@ struct Integer
    T opCast(T)() const
    if (isIntegral!T && isSigned!T)
    {
-        return this.sign ? -(cast(Unsigned!T) this) : cast(Unsigned!T) this;
+        return this.sign
+            ? cast(T) -(cast(Promoted!(Unsigned!T)) (cast(Unsigned!T) this))
+            : cast(Unsigned!T) this;
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto integer = Integer(79);
        assert(cast(ushort) integer == 79);
@ -424,7 +430,7 @@ struct Integer
     * Typically very fast.  Also fixes the sign if there
     * are no more leading digits
     */
-    void contract() nothrow @safe @nogc
+    void contract() @nogc nothrow pure @safe
    {
        /* decrease size while the most significant digit is
         * zero.
@ -441,7 +447,7 @@ struct Integer
        }
    }

-    private void grow(const size_t size) nothrow @trusted @nogc
+    private void grow(const size_t size) @nogc nothrow pure @safe
    {
        if (this.rep.length >= size)
        {
@ -452,7 +458,7 @@ struct Integer
        this.rep[oldLength .. $].fill(digit.init);
    }

-    private size_t countBits() const pure nothrow @safe @nogc
+    private size_t countBits() const @nogc nothrow pure @safe
    {
        if (this.size == 0)
        {
@ -470,7 +476,7 @@ struct Integer
    }

    private void add(ref const Integer summand, ref Integer sum)
-    const nothrow @safe @nogc
+    const @nogc nothrow pure @safe
    {
        const(digit)[] max, min;

@ -521,7 +527,7 @@ struct Integer
    }

    private void add(const digit summand, ref Integer sum)
-    const nothrow @safe @nogc
+    const @nogc nothrow pure @safe
    {
        sum.grow(this.size + 2);

@ -547,7 +553,7 @@ struct Integer
    }

    private void subtract(ref const Integer subtrahend, ref Integer difference)
-    const nothrow @safe @nogc
+    const @nogc nothrow pure @safe
    {
        difference.grow(this.size);

@ -583,7 +589,7 @@ struct Integer
    }

    private void subtract(const digit subtrahend, ref Integer difference)
-    const nothrow @safe @nogc
+    const @nogc nothrow pure @safe
    {
        difference.grow(this.size);

@ -612,7 +618,7 @@ struct Integer
    }

    // Compare the magnitude.
-    private int compare(ref const Integer that) const pure nothrow @safe @nogc
+    private int compare(ref const Integer that) const @nogc nothrow pure @safe
    {
        if (this.size > that.size)
        {
@ -661,7 +667,7 @@ struct Integer
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto integer1 = Integer(1019);
        auto integer2 = Integer(1019);
@ -707,7 +713,7 @@ struct Integer
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto integer = Integer(1019);

@ -731,7 +737,7 @@ struct Integer
    }

    ///
-    @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto integer = Integer(1019);

@ -767,7 +773,7 @@ struct Integer
    }

    ///
-    unittest
+    @nogc nothrow pure @safe unittest
    {
        {
            auto h1 = Integer(1019);
@ -809,7 +815,7 @@ struct Integer
    }

    ///
-    unittest
+    @nogc nothrow pure @safe unittest
    {
        {
            auto h1 = Integer(3);
@ -853,7 +859,7 @@ struct Integer
    }

    ///
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto h1 = Integer(123);
        auto h2 = Integer(456);
@ -867,7 +873,7 @@ struct Integer
    {
        assert(operand.length > 0, "Division by zero.");
    }
-    body
+    do
    {
        divide(operand, this);
        return this;
@ -879,13 +885,13 @@ struct Integer
    {
        assert(operand.length > 0, "Division by zero.");
    }
-    body
+    do
    {
        divide(operand, null, this);
        return this;
    }

-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto h1 = Integer(18);
        auto h2 = Integer(4);
@ -937,7 +943,7 @@ struct Integer
    }

    ///
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto integer = Integer(4294967294);
        integer >>= 10;
@ -1005,7 +1011,7 @@ struct Integer
    }

    ///
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto integer = Integer(4294967295);
        integer <<= 1;
@ -1023,7 +1029,10 @@ struct Integer
    Integer opUnary(string op : "~")() const
    {
        auto ret = Integer(this, allocator);
-        ret.rep[0 .. ret.size].each!((ref a) => a = ~a & mask);
+        foreach (ref a; ret.rep[0 .. ret.size])
+        {
+            a = ~a & mask;
+        }
        return ret;
    }

@ -1049,7 +1058,7 @@ struct Integer
    }

    //
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto h1 = Integer(79);
        Integer h2;
@ -1065,7 +1074,7 @@ struct Integer
        assert(h1 == 79);

        h2 = ~h1;
-        assert(h2 == ~cast(ubyte) 79);
+        assert(h2 == cast(ubyte) ~79);
    }

    /// ditto
@ -1102,7 +1111,7 @@ struct Integer
    }

    ///
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        Integer integer;

@ -1159,7 +1168,7 @@ struct Integer
    {
        assert(operand.length > 0, "Division by zero.");
    }
-    body
+    do
    {
        mixin("return Integer(this, allocator) " ~ op ~ "= operand;");
    }
@ -1172,7 +1181,7 @@ struct Integer
    }

    // Shift right a certain amount of digits.
-    private void shiftRight(const size_t operand) nothrow @safe @nogc
+    private void shiftRight(const size_t operand) @nogc nothrow pure @safe
    {
        if (operand == 0)
        {
@ -1191,7 +1200,7 @@ struct Integer
    }

    // Shift left a certain amount of digits.
-    private void shiftLeft(const size_t operand) nothrow @safe @nogc
+    private void shiftLeft(const size_t operand) @nogc nothrow pure @safe
    {
        if (operand == 0)
        {
@ -1213,7 +1222,7 @@ struct Integer
    }

    private void multiply(const digit factor, ref Integer product)
-    const nothrow @safe @nogc
+    const @nogc nothrow pure @safe
    {
        product.grow(this.size + 1);
        product.sign = this.sign;
@ -1239,7 +1248,7 @@ struct Integer

    private void multiply(ref const Integer factor,
                          ref Integer product,
-                          const size_t digits) const nothrow @safe @nogc
+                          const size_t digits) const @nogc nothrow pure @safe
    {
        Integer intermediate;
        intermediate.grow(digits);
@ -1270,8 +1279,7 @@ struct Integer

    private void divide(Q, ARGS...)(ref const Integer divisor,
                                    auto ref Q quotient,
-                                    ref ARGS args)
-    const nothrow @safe @nogc
+                                    ref ARGS args) const
    if ((is(Q : typeof(null))
     || (is(Q : Integer) && __traits(isRef, quotient)))
     && (ARGS.length == 0 || (ARGS.length == 1 && is(ARGS[0] : Integer))))
@ -1279,7 +1287,7 @@ struct Integer
    {
        assert(divisor != 0, "Division by zero.");
    }
-    body
+    do
    {
        if (compare(divisor) < 0)
        {
@ -1404,7 +1412,7 @@ struct Integer
        }
    }

-    private Integer square() nothrow @safe @nogc
+    private Integer square() @nogc nothrow pure @safe
    {
        Integer result;
        const resultSize = 2 * this.size + 1;
@ -1444,7 +1452,7 @@ struct Integer
    }

    // Returns 2^^n.
-    private Integer exp2(size_t n) const nothrow @safe @nogc
+    private Integer exp2(size_t n) const @nogc nothrow pure @safe
    {
        auto ret = Integer(allocator);
        const bytes = n / digitBitCount;
@ -1459,12 +1467,12 @@ struct Integer
    /**
     * Returns: Two's complement representation of the integer.
     */
-    Array!ubyte toArray() const nothrow @safe @nogc
+    Array!ubyte toArray() const @nogc nothrow pure @safe
    out (array)
    {
        assert(array.length == length);
    }
-    body
+    do
    {
        Array!ubyte array;

@ -1512,7 +1520,7 @@ struct Integer
    }

    ///
-    nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        {
            auto integer = Integer(0x66778899aabbddee);
@ -1521,6 +1529,14 @@ struct Integer
            auto array = integer.toArray();
            assert(equal(array[], expected[]));
        }
+    }
+
+    @nogc nothrow pure @safe unittest
+    {
+        {
+            Integer integer;
+            assert(integer.toArray().length == 0);
+        }
        {
            auto integer = Integer(0x03);
            ubyte[1] expected = [ 0x03 ];
--- a/source/tanya/math/nbtheory.d
+++ b/source/tanya/math/nbtheory.d
@ -30,15 +30,15 @@ else
 * Calculates the absolute value of a number.
 *
 * Params:
- *  I = Value type.
- *  x = Value.
+ *  T = Argument type.
+ *  x = Argument.
 *
 * Returns: Absolute value of $(D_PARAM x).
 */
-I abs(I)(I x)
-if (isIntegral!I)
+T abs(T)(T x)
+if (isIntegral!T)
 {
-    static if (isSigned!I)
+    static if (isSigned!T)
    {
        return x >= 0 ? x : -x;
    }
@ -49,7 +49,7 @@ if (isIntegral!I)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    int i = -1;
    assert(i.abs == 1);
@ -63,25 +63,25 @@ pure nothrow @safe @nogc unittest
 version (D_Ddoc)
 {
    /// ditto
-    I abs(I)(I x)
-    if (isFloatingPoint!I);
+    T abs(T)(T x)
+    if (isFloatingPoint!T);
 }
 else version (TanyaNative)
 {
-    extern I abs(I)(I number) pure nothrow @safe @nogc
-    if (isFloatingPoint!I);
+    extern T abs(T)(T number) @nogc nothrow pure @safe
+    if (isFloatingPoint!T);
 }
 else
 {
-    I abs(I)(I x)
-    if (isFloatingPoint!I)
+    T abs(T)(T x)
+    if (isFloatingPoint!T)
    {
        return fabs(cast(real) x);
    }
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    float f = -1.64;
    assert(f.abs == 1.64F);
@ -97,7 +97,7 @@ pure nothrow @safe @nogc unittest
 }

 /// ditto
-I abs(I : Integer)(const auto ref I x)
+T abs(T : Integer)(const auto ref T x)
 {
    auto result = Integer(x, x.allocator);
    result.sign = Sign.positive;
@ -105,7 +105,7 @@ I abs(I : Integer)(const auto ref I x)
 }

 /// ditto
-I abs(I : Integer)(I x)
+T abs(T : Integer)(T x)
 {
    x.sign = Sign.positive;
    return x;
@ -117,37 +117,30 @@ version (D_Ddoc)
     * Calculates natural logarithm of $(D_PARAM x).
     *
     * Params:
+     *  T = Argument type.
     *  x = Argument.
     *
     * Returns: Natural logarithm of $(D_PARAM x).
     */
-    float ln(float x) pure nothrow @safe @nogc;
-    /// ditto
-    double ln(double x) pure nothrow @safe @nogc;
-    /// ditto
-    real ln(real x) pure nothrow @safe @nogc;
+    T ln(T)(T x)
+    if (isFloatingPoint!T);
 }
 else version (TanyaNative)
 {
-    extern float ln(float x) pure nothrow @safe @nogc;
-    extern double ln(double x) pure nothrow @safe @nogc;
-    extern real ln(real x) pure nothrow @safe @nogc;
+    extern T ln(T)(T x) @nogc nothrow pure @safe
+    if (isFloatingPoint!T);
 }
 else
 {
-    float ln(float x) pure nothrow @safe @nogc
+    T ln(T)(T x)
+    if (isFloatingPoint!T)
    {
        return log(x);
    }
-    double ln(double x) pure nothrow @safe @nogc
-    {
-        return log(x);
-    }
-    alias ln = log;
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    import tanya.math;

--- a/source/tanya/math/package.d
+++ b/source/tanya/math/package.d
@ -21,9 +21,11 @@
 */
 module tanya.math;

+import tanya.algorithm.mutation;
 import tanya.math.mp;
 import tanya.math.nbtheory;
 import tanya.meta.trait;
+import tanya.meta.transform;

 /// Floating-point number precisions according to IEEE-754.
 enum IEEEPrecision : ubyte
@ -79,7 +81,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    static assert(ieeePrecision!float == IEEEPrecision.single);
    static assert(ieeePrecision!double == IEEEPrecision.double_);
@ -231,7 +233,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(classify(0.0) == FloatingPointClass.zero);
    assert(classify(double.nan) == FloatingPointClass.nan);
@ -253,7 +255,7 @@ pure nothrow @safe @nogc unittest
    assert(classify(-real.infinity) == FloatingPointClass.infinite);
 }

-private pure nothrow @nogc @safe unittest
+@nogc nothrow pure @safe unittest
 {
    static if (ieeePrecision!float == IEEEPrecision.doubleExtended)
    {
@ -300,7 +302,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(!isFinite(float.infinity));
    assert(!isFinite(-double.infinity));
@ -345,7 +347,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(isNaN(float.init));
    assert(isNaN(double.init));
@ -382,7 +384,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(isInfinity(float.infinity));
    assert(isInfinity(-float.infinity));
@ -436,7 +438,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(!isSubnormal(0.0f));
    assert(!isSubnormal(float.nan));
@ -496,7 +498,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(!isNormal(0.0f));
    assert(!isNormal(float.nan));
@ -547,7 +549,7 @@ if (isFloatingPoint!F)
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(signBit(-1.0f));
    assert(!signBit(1.0f));
@ -584,7 +586,7 @@ in
 {
    assert(z > 0, "Division by zero.");
 }
-body
+do
 {
    G mask = G.max / 2 + 1;
    H result;
@ -625,7 +627,7 @@ in
 {
    assert(z.length > 0, "Division by zero.");
 }
-body
+do
 {
    size_t i;
    auto tmp1 = Integer(x, x.allocator);
@ -659,7 +661,7 @@ body
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(pow(3, 5, 7) == 5);
    assert(pow(2, 2, 1) == 0);
@ -673,7 +675,7 @@ pure nothrow @safe @nogc unittest
 }

 ///
-nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(pow(Integer(3), Integer(5), Integer(7)) == 5);
    assert(pow(Integer(2), Integer(2), Integer(1)) == 0);
@ -695,13 +697,13 @@ nothrow @safe @nogc unittest
 * Returns: $(D_KEYWORD true) if $(D_PARAM x) is a prime number,
 *          $(D_KEYWORD false) otherwise.
 */
-bool isPseudoprime(ulong x) nothrow pure @safe @nogc
+bool isPseudoprime(ulong x) @nogc nothrow pure @safe
 {
    return pow(2, x - 1, x) == 1;
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(74623.isPseudoprime);
    assert(104729.isPseudoprime);
@ -709,7 +711,7 @@ pure nothrow @safe @nogc unittest
    assert(!15485868.isPseudoprime);
 }

-private pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    assert(74653.isPseudoprime);
    assert(74687.isPseudoprime);
@ -738,3 +740,158 @@ private pure nothrow @safe @nogc unittest
    assert(899809363.isPseudoprime);
    assert(982451653.isPseudoprime);
 }
+
+/**
+ * Determines minimum of two numbers.
+ *
+ * Params:
+ *  x = First number.
+ *  y = Second number.
+ *
+ * Returns: $(D_PARAM x) if $(D_PARAM x) is smaller than $(D_PSYMBOL y),
+ *          $(D_PARAM y) otherwise.
+ *
+ * See_Also: $(D_PSYMBOL max).
+ */
+T min(T)(T x, T y)
+if (isIntegral!T)
+{
+    return x < y ? x : y;
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(min(5, 3) == 3);
+    assert(min(4, 4) == 4);
+}
+
+/// ditto
+T min(T)(T x, T y)
+if (isFloatingPoint!T)
+{
+    if (isNaN(x))
+    {
+        return y;
+    }
+    if (isNaN(y))
+    {
+        return x;
+    }
+    return x < y ? x : y;
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(min(5.2, 3.0) == 3.0);
+
+    assert(min(5.2, double.nan) == 5.2);
+    assert(min(double.nan, 3.0) == 3.0);
+    assert(isNaN(min(double.nan, double.nan)));
+}
+
+/// ditto
+ref T min(T)(ref T x, ref T y)
+if (is(Unqual!T == Integer))
+{
+    return x < y ? x : y;
+}
+
+/// ditto
+T min(T)(T x, T y)
+if (is(T == Integer))
+{
+    return x < y ? move(x) : move(y);
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(min(Integer(5), Integer(3)) == 3);
+}
+
+/**
+ * Determines maximum of two numbers.
+ *
+ * Params:
+ *  x = First number.
+ *  y = Second number.
+ *
+ * Returns: $(D_PARAM x) if $(D_PARAM x) is larger than $(D_PSYMBOL y),
+ *          $(D_PARAM y) otherwise.
+ *
+ * See_Also: $(D_PSYMBOL min).
+ */
+T max(T)(T x, T y)
+if (isIntegral!T)
+{
+    return x > y ? x : y;
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(max(5, 3) == 5);
+    assert(max(4, 4) == 4);
+}
+
+/// ditto
+T max(T)(T x, T y)
+if (isFloatingPoint!T)
+{
+    if (isNaN(x))
+    {
+        return y;
+    }
+    if (isNaN(y))
+    {
+        return x;
+    }
+    return x > y ? x : y;
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(max(5.2, 3.0) == 5.2);
+
+    assert(max(5.2, double.nan) == 5.2);
+    assert(max(double.nan, 3.0) == 3.0);
+    assert(isNaN(max(double.nan, double.nan)));
+}
+
+/// ditto
+ref T max(T)(ref T x, ref T y)
+if (is(Unqual!T == Integer))
+{
+    return x > y ? x : y;
+}
+
+/// ditto
+T max(T)(T x, T y)
+if (is(T == Integer))
+{
+    return x > y ? move(x) : move(y);
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    assert(max(Integer(5), Integer(3)) == 5);
+}
+
+// min/max accept const and mutable references.
+@nogc nothrow pure @safe unittest
+{
+    {
+        Integer i1 = 5, i2 = 3;
+        assert(min(i1, i2) == 3);
+        assert(max(i1, i2) == 5);
+    }
+    {
+        const Integer i1 = 5, i2 = 3;
+        assert(min(i1, i2) == 3);
+        assert(max(i1, i2) == 5);
+    }
+}
--- a/source/tanya/math/random.d
+++ b/source/tanya/math/random.d
@ -94,9 +94,31 @@ abstract class EntropySource
    Nullable!ubyte poll(out ubyte[maxGather] output) @nogc;
 }

+version (CRuntime_Bionic)
+{
+    version = SecureARC4Random;
+}
+else version (OSX)
+{
+    version = SecureARC4Random;
+}
+else version (OpenBSD)
+{
+    version = SecureARC4Random;
+}
+else version (NetBSD)
+{
+    version = SecureARC4Random;
+}
+else version (Solaris)
+{
+    version = SecureARC4Random;
+}
+
 version (linux)
 {
-    extern (C) long syscall(long number, ...) nothrow @system @nogc;
+    import core.stdc.config : c_long;
+    extern (C) c_long syscall(c_long number, ...) nothrow @system @nogc;

    /**
     * Uses getrandom system call.
@ -134,10 +156,11 @@ version (linux)
        {
            assert(length <= maxGather);
        }
-        body
+        do
        {
            // int getrandom(void *buf, size_t buflen, unsigned int flags);
-            auto length = syscall(318, output.ptr, output.length, 0);
+            import mir.linux._asm.unistd : NR_getrandom;
+            auto length = syscall(NR_getrandom, output.ptr, output.length, 0);
            Nullable!ubyte ret;

            if (length >= 0)
@ -148,9 +171,7 @@ version (linux)
        }
    }

-    version (X86_64)
-    {
-        private unittest
+    @nogc @system unittest
    {
        auto entropy = defaultAllocator.make!Entropy();
        ubyte[blockSize] output;
@ -159,6 +180,172 @@ version (linux)
        defaultAllocator.dispose(entropy);
    }
 }
+else version (SecureARC4Random)
+{
+    private extern (C) void arc4random_buf(scope void* buf, size_t nbytes) nothrow @nogc @system;
+
+    /**
+     * Uses arc4random_buf.
+     */
+    class PlatformEntropySource : EntropySource
+    {
+        /**
+         * Returns: Minimum bytes required from the entropy source.
+         */
+        override @property ubyte threshold() const pure nothrow @safe @nogc
+        {
+            return 32;
+        }
+
+        /**
+         * Returns: Whether this entropy source is strong.
+         */
+        override @property bool strong() const pure nothrow @safe @nogc
+        {
+            return true;
+        }
+
+        /**
+         * Poll the entropy source.
+         *
+         * Params:
+         *  output = Buffer to save the generate random sequence (the method will
+         *           to fill the buffer).
+         *
+         * Returns: Number of bytes that were copied to the $(D_PARAM output)
+         *          or $(D_PSYMBOL Nullable!ubyte.init) on error.
+         */
+        override Nullable!ubyte poll(out ubyte[maxGather] output) nothrow @nogc @safe
+        {
+            (() @trusted => arc4random_buf(output.ptr, output.length))();
+            return Nullable!ubyte(cast(ubyte) (output.length));
+        }
+    }
+
+    @nogc @system unittest
+    {
+        auto entropy = defaultAllocator.make!Entropy();
+        ubyte[blockSize] output;
+        output = entropy.random;
+
+        defaultAllocator.dispose(entropy);
+    }
+}
+else version (Windows)
+{
+    import core.sys.windows.basetsd : ULONG_PTR;
+    import core.sys.windows.windef : BOOL, DWORD, PBYTE;
+    import core.sys.windows.winnt : LPCSTR, LPCWSTR;
+    import core.sys.windows.wincrypt;
+    private extern(Windows) @nogc nothrow
+    {
+        BOOL CryptGenRandom(HCRYPTPROV, DWORD, PBYTE);
+        BOOL CryptAcquireContextA(HCRYPTPROV*, LPCSTR, LPCSTR, DWORD, DWORD);
+        BOOL CryptAcquireContextW(HCRYPTPROV*, LPCWSTR, LPCWSTR, DWORD, DWORD);
+        BOOL CryptReleaseContext(HCRYPTPROV, ULONG_PTR);
+    }
+
+    private bool initCryptGenRandom(scope ref HCRYPTPROV hProvider) @nogc nothrow @trusted
+    {
+        import core.sys.windows.winbase : GetLastError;
+        import core.sys.windows.winerror : NTE_BAD_KEYSET;
+
+        // https://msdn.microsoft.com/en-us/library/windows/desktop/aa379886(v=vs.85).aspx
+        // For performance reasons, we recommend that you set the pszContainer
+        // parameter to NULL and the dwFlags parameter to CRYPT_VERIFYCONTEXT
+        // in all situations where you do not require a persisted key.
+        // CRYPT_SILENT is intended for use with applications for which the UI cannot be displayed by the CSP.
+        if (!CryptAcquireContextW(&hProvider, null, null, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
+        {
+            if (GetLastError() == NTE_BAD_KEYSET)
+            {
+                // Attempt to create default container
+                if (!CryptAcquireContextA(&hProvider, null, null, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_SILENT))
+                    return false;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    class PlatformEntropySource : EntropySource
+    {
+        private HCRYPTPROV hProvider;
+
+        /**
+         * Uses CryptGenRandom.
+         */
+        this() @nogc
+        {
+            if (!initCryptGenRandom(hProvider))
+            {
+                throw defaultAllocator.make!EntropyException("CryptAcquireContextW failed.");
+            }
+            assert(hProvider > 0, "hProvider not properly initialized.");
+        }
+
+        ~this() @nogc nothrow @safe
+        {
+            if (hProvider > 0)
+            {
+                (() @trusted => CryptReleaseContext(hProvider, 0))();
+            }
+        }
+
+        /**
+         * Returns: Minimum bytes required from the entropy source.
+         */
+        override @property ubyte threshold() const pure nothrow @safe @nogc
+        {
+            return 32;
+        }
+
+        /**
+         * Returns: Whether this entropy source is strong.
+         */
+        override @property bool strong() const pure nothrow @safe @nogc
+        {
+            return true;
+        }
+
+        /**
+         * Poll the entropy source.
+         *
+         * Params:
+         *  output = Buffer to save the generate random sequence (the method will
+         *           to fill the buffer).
+         *
+         * Returns: Number of bytes that were copied to the $(D_PARAM output)
+         *          or $(D_PSYMBOL Nullable!ubyte.init) on error.
+         */
+        override Nullable!ubyte poll(out ubyte[maxGather] output) @nogc nothrow @safe
+        in
+        {
+            assert(hProvider > 0, "hProvider not properly initialized.");
+        }
+        do
+        {
+            Nullable!ubyte ret;
+            if ((() @trusted => CryptGenRandom(hProvider, output.length, cast(PBYTE) output.ptr))())
+            {
+                ret = cast(ubyte) (output.length);
+            }
+            return ret;
+        }
+    }
+
+    @nogc @system unittest
+    {
+        auto entropy = defaultAllocator.make!Entropy();
+        ubyte[blockSize] output;
+        output = entropy.random;
+
+        defaultAllocator.dispose(entropy);
+    }
 }

 /**
@ -180,8 +367,6 @@ class Entropy

    private ubyte sourceCount_;

-    private shared Allocator allocator;
-
    /// Entropy accumulator.
    protected SHA!(maxGather * 8, 512) accumulator;

@ -198,11 +383,11 @@ class Entropy
        assert(maxSources > 0 && maxSources <= ubyte.max);
        assert(allocator !is null);
    }
-    body
+    do
    {
        allocator.resize(sources, maxSources);

-        version (linux)
+        static if (is(PlatformEntropySource))
        {
            this ~= allocator.make!PlatformEntropySource;
        }
@ -234,7 +419,7 @@ class Entropy
    {
        assert(sourceCount_ <= sources.length);
    }
-    body
+    do
    {
        sources[sourceCount_++] = source;
        return this;
@ -251,7 +436,7 @@ class Entropy
    {
        assert(sourceCount_ > 0, "No entropy sources defined.");
    }
-    body
+    do
    {
        bool haveStrong;
        ushort done;
@ -289,7 +474,7 @@ class Entropy

        if (!haveStrong)
        {
-            throw allocator.make!EntropyException("No strong entropy source defined.");
+            throw defaultAllocator.make!EntropyException("No strong entropy source defined.");
        }

        output = accumulator.finish();
--- a/source/tanya/memory/mallocator.d
+++ b/source/tanya/memory/mallocator.d
@ -14,7 +14,10 @@
 */
 module tanya.memory.mallocator;

-version (TanyaPhobos):
+version (TanyaNative)
+{
+}
+else:

 import core.stdc.stdlib;
 import tanya.memory.allocator;
--- a/source/tanya/memory/mmappool.d
+++ b/source/tanya/memory/mmappool.d
@ -2,7 +2,7 @@
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

-/**
+/*
 * Native allocator for Posix and Windows.
 *
 * Copyright: Eugene Wissner 2016-2017.
@ -82,7 +82,7 @@ else version (Windows)
    }
 }

-/**
+/*
 * This allocator allocates memory in regions (multiple of 64 KB for example).
 * Each region is then splitted in blocks. So it doesn't request the memory
 * from the operating system on each call, but only if there are no large
@ -106,6 +106,7 @@ else version (Windows)
 * ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 * </pre>
 */
+deprecated("Use tanya.memory.mallocator instead")
 final class MmapPool : Allocator
 {
    version (none)
@ -126,7 +127,7 @@ final class MmapPool : Allocator
        }
    }

-    /**
+    /*
     * Allocates $(D_PARAM size) bytes of memory.
     *
     * Params:
@ -155,8 +156,7 @@ final class MmapPool : Allocator
        return data is null ? null : data[0 .. size];
    }

-    ///
-    nothrow unittest
+    version (TanyaNative) @nogc nothrow pure unittest
    {
        auto p = MmapPool.instance.allocate(20);
        assert(p);
@ -167,7 +167,7 @@ final class MmapPool : Allocator
    }

    // Issue 245: https://issues.caraus.io/issues/245.
-    private @nogc unittest
+    version (TanyaNative) @nogc nothrow pure unittest
    {
        // allocate() check.
        size_t tooMuchMemory = size_t.max
@ -245,7 +245,7 @@ final class MmapPool : Allocator
        block.next = block.next.next;
    }

-    /**
+    /*
     * Deallocates a memory block.
     *
     * Params:
@ -299,15 +299,14 @@ final class MmapPool : Allocator
        return true;
    }

-    ///
-    nothrow unittest
+    version (TanyaNative) @nogc nothrow pure unittest
    {
        auto p = MmapPool.instance.allocate(20);

        assert(MmapPool.instance.deallocate(p));
    }

-    /**
+    /*
     * Reallocates a memory block in place if possible or returns
     * $(D_KEYWORD false). This function cannot be used to allocate or
     * deallocate memory, so if $(D_PARAM p) is $(D_KEYWORD null) or
@ -383,8 +382,7 @@ final class MmapPool : Allocator
        return true;
    }

-    ///
-    nothrow unittest
+    version (TanyaNative) @nogc nothrow pure unittest
    {
        void[] p;
        assert(!MmapPool.instance.reallocateInPlace(p, 5));
@ -408,7 +406,7 @@ final class MmapPool : Allocator
        MmapPool.instance.deallocate(p);
    }

-    /**
+    /*
     * Increases or decreases the size of a memory block.
     *
     * Params:
@ -449,8 +447,7 @@ final class MmapPool : Allocator
        return true;
    }

-    ///
-    nothrow unittest
+    version (TanyaNative) @nogc nothrow pure unittest
    {
        void[] p;
        MmapPool.instance.reallocate(p, 10 * int.sizeof);
@ -514,7 +511,7 @@ final class MmapPool : Allocator
        return instance_;
    }

-    /**
+    /*
     * Static allocator instance and initializer.
     *
     * Returns: Global $(D_PSYMBOL MmapPool) instance.
@ -524,8 +521,7 @@ final class MmapPool : Allocator
        return (cast(GetPureInstance!MmapPool) &instantiate)();
    }

-    ///
-    nothrow unittest
+    version (TanyaNative) @nogc nothrow pure unittest
    {
        assert(instance is instance);
    }
@ -622,7 +618,7 @@ final class MmapPool : Allocator
             / pageSize * pageSize + pageSize;
    }

-    /**
+    /*
     * Returns: Alignment offered.
     */
    @property uint alignment() shared const pure nothrow @safe @nogc
@ -630,7 +626,7 @@ final class MmapPool : Allocator
        return alignment_;
    }

-    private nothrow @nogc unittest
+    version (TanyaNative) @nogc nothrow pure unittest
    {
        assert(MmapPool.instance.alignment == MmapPool.alignment_);
    }
@ -661,9 +657,11 @@ final class MmapPool : Allocator
    private alias Block = shared BlockEntry*;
 }

+version (TanyaNative):
+
 // A lot of allocations/deallocations, but it is the minimum caused a
 // segmentation fault because MmapPool reallocateInPlace moves a block wrong.
-private @nogc unittest
+@nogc nothrow pure unittest
 {
    auto a = MmapPool.instance.allocate(16);
    auto d = MmapPool.instance.allocate(16);
--- a/source/tanya/memory/op.d
+++ b/source/tanya/memory/op.d
@ -32,6 +32,16 @@ else
    import core.stdc.string;
 }

+version (TanyaNative)
+{
+    @nogc nothrow pure @system unittest
+    {
+        ubyte[2] buffer = 1;
+        fillMemory(buffer[1 .. $], 0);
+        assert(buffer[0] == 1 && buffer[1] == 0);
+    }
+}
+
 private enum alignMask = size_t.sizeof - 1;

 /**
@ -51,12 +61,14 @@ private enum alignMask = size_t.sizeof - 1;
 *
 * Precondition: $(D_INLINECODE source.length <= target.length).
 */
-void copy(const void[] source, void[] target) pure nothrow @trusted @nogc
+void copy(const void[] source, void[] target) @nogc nothrow pure @trusted
 in
 {
    assert(source.length <= target.length);
+    assert(source.length == 0 || source.ptr !is null);
+    assert(target.length == 0 || target.ptr !is null);
 }
-body
+do
 {
    version (TanyaNative)
    {
@ -69,7 +81,7 @@ body
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    ubyte[9] source = [1, 2, 3, 4, 5, 6, 7, 8, 9];
    ubyte[9] target;
@ -77,7 +89,7 @@ pure nothrow @safe @nogc unittest
    assert(cmp(source, target) == 0);
 }

-private pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    {
        ubyte[0] source, target;
@ -120,6 +132,11 @@ private template filledBytes(ubyte Byte, ubyte I = 0)
 *  memory = Memory block.
 */
 void fill(ubyte c = 0)(void[] memory) @trusted
+in
+{
+    assert(memory.length == 0 || memory.ptr !is null);
+}
+do
 {
    version (TanyaNative)
    {
@ -132,7 +149,7 @@ void fill(ubyte c = 0)(void[] memory) @trusted
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    ubyte[9] memory = [1, 2, 3, 4, 5, 6, 7, 8, 9];
    memory.fill!0();
@ -142,31 +159,6 @@ pure nothrow @safe @nogc unittest
    }
 }

-// Stress test. Checks that `fill` can handle unaligned pointers and different
-// lengths.
-pure nothrow @safe @nogc private unittest
-{
-    ubyte[192] memory;
-
-    foreach (j; 0 .. 192)
-    {
-        foreach (ubyte i, ref ubyte v; memory[j .. $])
-        {
-            v = i;
-        }
-        fill(memory[j .. $]);
-        foreach (ubyte v; memory[j .. $])
-        {
-            assert(v == 0);
-        }
-        fill!1(memory[j .. $]);
-        foreach (ubyte v; memory[j .. $])
-        {
-            assert(v == 1);
-        }
-    }
-}
-
 /**
 * Copies starting from the end of $(D_PARAM source) into the end of
 * $(D_PARAM target).
@ -189,12 +181,14 @@ pure nothrow @safe @nogc private unittest
 *
 * Precondition: $(D_INLINECODE source.length <= target.length).
 */
-void copyBackward(const void[] source, void[] target) pure nothrow @trusted @nogc
+void copyBackward(const void[] source, void[] target) @nogc nothrow pure @trusted
 in
 {
    assert(source.length <= target.length);
+    assert(source.length == 0 || source.ptr !is null);
+    assert(target.length == 0 || target.ptr !is null);
 }
-body
+do
 {
    version (TanyaNative)
    {
@ -207,7 +201,7 @@ body
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    ubyte[6] mem = [ 'a', 'a', 'b', 'b', 'c', 'c' ];
    ubyte[6] expected = [ 'a', 'a', 'a', 'a', 'b', 'b' ];
@ -216,7 +210,7 @@ pure nothrow @safe @nogc unittest
    assert(cmp(expected, mem) == 0);
 }

-private nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    ubyte[9] r1 = [ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i' ];
    ubyte[9] r2;
@ -242,7 +236,13 @@ private nothrow @safe @nogc unittest
 *          negative integer if $(D_INLINECODE r2 > r1),
 *          `0` if $(D_INLINECODE r1 == r2).
 */
-int cmp(const void[] r1, const void[] r2) pure nothrow @trusted @nogc
+int cmp(const void[] r1, const void[] r2) @nogc nothrow pure @trusted
+in
+{
+    assert(r1.length == 0 || r1.ptr !is null);
+    assert(r2.length == 0 || r2.ptr !is null);
+}
+do
 {
    version (TanyaNative)
    {
@ -259,7 +259,7 @@ int cmp(const void[] r1, const void[] r2) pure nothrow @trusted @nogc
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    ubyte[4] r1 = [ 'a', 'b', 'c', 'd' ];
    ubyte[3] r2 = [ 'c', 'a', 'b' ];
@ -271,7 +271,7 @@ pure nothrow @safe @nogc unittest
    assert(cmp(r2, r1) < 0);
 }

-private pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    ubyte[16] r1 = [
        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
@ -301,7 +301,12 @@ private pure nothrow @safe @nogc unittest
 *          couldn't be found, an empty `inout void[]` is returned.
 */
 inout(void[]) find(return inout void[] haystack, const ubyte needle)
-pure nothrow @trusted @nogc
+@nogc nothrow pure @trusted
+in
+{
+    assert(haystack.length == 0 || haystack.ptr !is null);
+}
+do
 {
    auto length = haystack.length;
    const size_t needleWord = size_t.max * needle;
@ -348,7 +353,7 @@ pure nothrow @trusted @nogc
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    const ubyte[9] haystack = ['a', 'b', 'c', 'd', 'e', 'f', 'b', 'g', 'h'];

--- a/source/tanya/memory/package.d
+++ b/source/tanya/memory/package.d
@ -14,12 +14,10 @@
 */
 module tanya.memory;

-import std.algorithm.iteration;
 import std.algorithm.mutation;
 import tanya.conv;
 import tanya.exception;
 public import tanya.memory.allocator;
-import tanya.memory.mmappool;
 import tanya.meta.trait;
 import tanya.range.primitive;

@ -45,7 +43,7 @@ mixin template DefaultAllocator()
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.allocator_ = allocator;
    }
@ -63,7 +61,7 @@ mixin template DefaultAllocator()
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        if (allocator_ is null)
        {
@ -78,7 +76,7 @@ mixin template DefaultAllocator()
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        if (allocator_ is null)
        {
@ -94,13 +92,21 @@ private void _d_monitordelete(Object h, bool det) pure nothrow @nogc;

 shared Allocator allocator;

-shared static this() nothrow @nogc
-{
-    allocator = MmapPool.instance;
-}
-
 private shared(Allocator) getAllocatorInstance() nothrow @nogc
 {
+    if (allocator is null)
+    {
+        version (TanyaNative)
+        {
+            import tanya.memory.mmappool;
+            defaultAllocator = MmapPool.instance;
+        }
+        else
+        {
+            import tanya.memory.mallocator;
+            defaultAllocator = Mallocator.instance;
+        }
+    }
    return allocator;
 }

@ -114,7 +120,7 @@ out (allocator)
 {
    assert(allocator !is null);
 }
-body
+do
 {
    return (cast(GetPureInstance!Allocator) &getAllocatorInstance)();
 }
@ -132,7 +138,7 @@ in
 {
    assert(allocator !is null);
 }
-body
+do
 {
    .allocator = allocator;
 }
@ -244,7 +250,7 @@ package(tanya) T[] resize(T)(shared Allocator allocator,
    return array;
 }

-private unittest
+@nogc nothrow pure @safe unittest
 {
    int[] p;

@ -267,6 +273,10 @@ private unittest
 */
 package(tanya) void[] finalize(T)(ref T* p)
 {
+    if (p is null)
+    {
+        return null;
+    }
    static if (hasElaborateDestructor!T)
    {
        destroy(*p);
@ -333,7 +343,10 @@ package(tanya) void[] finalize(T)(ref T[] p)
 {
    static if (hasElaborateDestructor!(typeof(p[0])))
    {
-        p.each!((ref e) => destroy(e));
+        foreach (ref e; p)
+        {
+            destroy(e);
+        }
    }
    return p;
 }
@ -354,11 +367,11 @@ void dispose(T)(shared Allocator allocator, auto ref T p)
    p = null;
 }

-private unittest
+@nogc nothrow pure @system unittest
 {
-    struct S
+    static struct S
    {
-        ~this()
+        ~this() @nogc nothrow pure @safe
        {
        }
    }
@ -368,7 +381,7 @@ private unittest
 }

 // Works with interfaces.
-private pure unittest
+@nogc nothrow pure @safe unittest
 {
    interface I
    {
@ -403,7 +416,7 @@ in
 {
    assert(allocator !is null);
 }
-body
+do
 {
    auto mem = (() @trusted => allocator.allocate(stateSize!T))();
    if (mem is null)
@ -442,7 +455,7 @@ in
 {
    assert(allocator !is null);
 }
-body
+do
 {
    auto mem = (() @trusted => allocator.allocate(stateSize!T))();
    if (mem is null)
@ -457,7 +470,7 @@ body
 }

 ///
-unittest
+@nogc nothrow pure @safe unittest
 {
    int* i = defaultAllocator.make!int(5);
    assert(*i == 5);
@ -484,7 +497,7 @@ in
    assert(allocator !is null);
    assert(n <= size_t.max / ElementType!T.sizeof);
 }
-body
+do
 {
    auto ret = allocator.resize!(ElementType!T)(null, n);
    ret.uninitializedFill(ElementType!T.init);
@ -492,7 +505,7 @@ body
 }

 ///
-unittest
+@nogc nothrow pure @safe unittest
 {
    int[] i = defaultAllocator.make!(int[])(2);
    assert(i.length == 2);
--- a/source/tanya/memory/smartref.d
+++ b/source/tanya/memory/smartref.d
@ -24,7 +24,7 @@
 module tanya.memory.smartref;

 import std.algorithm.comparison;
-import std.algorithm.mutation;
+import tanya.algorithm.mutation;
 import tanya.conv;
 import tanya.exception;
 import tanya.memory;
@ -54,7 +54,7 @@ private final class RefCountedStore(T)
    {
        assert(this.counter > 0);
    }
-    body
+    do
    {
        mixin("return " ~ op ~ "counter;");
    }
@ -139,7 +139,7 @@ struct RefCounted(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.allocator_ = allocator;
    }
@ -247,7 +247,7 @@ struct RefCounted(T)
    {
        assert(count > 0, "Attempted to access an uninitialized reference");
    }
-    body
+    do
    {
        return this.storage.payload;
    }
@ -501,7 +501,7 @@ in
 {
    assert(allocator !is null);
 }
-body
+do
 {
    auto rc = typeof(return)(allocator);

@ -546,7 +546,7 @@ in
    assert(allocator !is null);
    assert(size <= size_t.max / ElementType!T.sizeof);
 }
-body
+do
 {
    return RefCounted!T(allocator.make!T(size), allocator);
 }
@ -611,7 +611,7 @@ body

@nogc @system unittest
 {
-    static bool destroyed = false;
+    static bool destroyed;

    static struct F
    {
@ -664,7 +664,7 @@ struct Unique(T)
    {
        assert(allocator !is null);
    }
-    body
+    do
    {
        this.allocator_ = allocator;
    }
@ -812,7 +812,7 @@ struct Unique(T)
 ///
@nogc nothrow @system unittest
 {
-    static bool destroyed = false;
+    static bool destroyed;

    static struct F
    {
@ -849,7 +849,7 @@ in
 {
    assert(allocator !is null);
 }
-body
+do
 {
    auto payload = allocator.make!(T, A)(args);
    return Unique!T(payload, allocator);
@ -877,7 +877,7 @@ in
    assert(allocator !is null);
    assert(size <= size_t.max / ElementType!T.sizeof);
 }
-body
+do
 {
    auto payload = allocator.resize!(ElementType!T)(null, size);
    return Unique!T(payload, allocator);
--- a/source/tanya/meta/metafunction.d
+++ b/source/tanya/meta/metafunction.d
@ -9,7 +9,7 @@
 * It contains different algorithms for iterating, searching and modifying
 * template arguments.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -232,19 +232,21 @@ if (Tuples.length > 0
 *
 * See_Also: $(D_PSYMBOL AliasSeq).
 */
-template Tuple(Args...)
+struct Tuple(Args...)
 {
    /// Elements in this tuple as $(D_PSYMBOL AliasSeq).
    alias Seq = Args;

    /// The length of the tuple.
    enum size_t length = Args.length;
+
+    alias Seq this;
 }

 ///
@nogc nothrow pure @safe unittest
 {
-    alias A = Tuple!(short);
+    alias A = Tuple!short;
    alias B = Tuple!(3, 8, 9);
    alias C = Tuple!(A, B);

@ -270,13 +272,15 @@ template Tuple(Args...)
 * Params:
 *  Args = Elements of this $(D_PSYMBOL Tuple).
 */
-template Set(Args...)
+struct Set(Args...)
 {
    /// Elements in this set as $(D_PSYMBOL AliasSeq).
    alias Seq = NoDuplicates!Args;

    /// The length of the set.
    enum size_t length = Seq.length;
+
+    alias Seq this;
 }

 ///
@ -682,7 +686,7 @@ if (Args.length == 2)
 }

 /**
- * Instantiates the template $(D_PARAM T) with $(D_PARAM ARGS).
+ * Instantiates the template $(D_PARAM T) with $(D_PARAM Args).
 *
 * Params:
 *  T    = Template.
@ -1634,7 +1638,8 @@ template Filter(alias pred, L...)
 ///
@nogc nothrow pure @safe unittest
 {
-    static assert(is(Filter!(isIntegral, real, int, bool, uint) == AliasSeq!(int, uint)));
+    alias Given = AliasSeq!(real, int, bool, uint);
+    static assert(is(Filter!(isIntegral, Given) == AliasSeq!(int, uint)));
 }

 /**
@ -1661,8 +1666,8 @@ template NoDuplicates(L...)
 ///
@nogc nothrow pure @safe unittest
 {
-    alias Types = AliasSeq!(int, uint, int, short, short, uint);
-    static assert(is(NoDuplicates!Types == AliasSeq!(int, uint, short)));
+    alias Given = AliasSeq!(int, uint, int, short, short, uint);
+    static assert(is(NoDuplicates!Given == AliasSeq!(int, uint, short)));
 }

 /**
--- a/source/tanya/meta/package.d
+++ b/source/tanya/meta/package.d
@ -9,7 +9,7 @@
 * to transform from one type to another. It has also different algorithms for
 * iterating, searching and modifying template arguments.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
--- a/source/tanya/meta/trait.d
+++ b/source/tanya/meta/trait.d
@ -8,7 +8,7 @@
 * Templates in this module are used to obtain type information at compile
 * time.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -160,6 +160,7 @@ enum bool isComplex(T) = is(Unqual!(OriginalType!T) == cfloat)
 * Returns: $(D_KEYWORD true) if $(D_PARAM T) is a POD type,
 *          $(D_KEYWORD false) otherwise.
 */
+deprecated("Use __traits(isPOD) instead")
 enum bool isPOD(T) = __traits(isPOD, T);

 ///
@ -196,6 +197,7 @@ enum bool isPOD(T) = __traits(isPOD, T);
 *
 * Returns: Size of the type $(D_PARAM T).
 */
+deprecated("Use T.sizeof instead")
 enum size_t sizeOf(T) = T.sizeof;

 ///
@ -217,6 +219,7 @@ enum size_t sizeOf(T) = T.sizeof;
 *
 * Returns: Alignment of the type $(D_PARAM T).
 */
+deprecated("Use T.alignof instead")
 enum size_t alignOf(T) = T.alignof;

 ///
@ -236,6 +239,7 @@ enum size_t alignOf(T) = T.alignof;
 * Returns: $(D_KEYWORD true) if $(D_PARAM Args) are the same symbol,
 *          $(D_KEYWORD false) otherwise.
 */
+deprecated("Use __traits(isSame) instead")
 template isSame(Args...)
 if (Args.length == 2)
 {
@ -263,27 +267,67 @@ if (Args.length == 2)
 * Returns: $(D_KEYWORD true) if $(D_PARAM T) is a template,
 *          $(D_KEYWORD false) otherwise.
 */
+deprecated("Use __traits(isTemplate) instead")
 enum bool isTemplate(alias T) = __traits(isTemplate, T);

 ///
@nogc nothrow pure @safe unittest
 {
-    struct S(T)
+    static struct S(T)
    {
    }
    static assert(isTemplate!S);
    static assert(!isTemplate!(S!int));
 }

+/**
+ * Tests whether $(D_PARAM T) is an interface.
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_KEYWORD true) if $(D_PARAM T) is an interface,
+ *          $(D_KEYWORD false) otherwise.
+ */
 deprecated("Use is(T == interface) instead")
 enum bool isInterface(T) = is(T == interface);

+/**
+ * Tests whether $(D_PARAM T) is a class.
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_KEYWORD true) if $(D_PARAM T) is a class,
+ *          $(D_KEYWORD false) otherwise.
+ */
 deprecated("Use is(T == class) instead")
 enum bool isClass(T) = is(T == class);

+/**
+ * Tests whether $(D_PARAM T) is a struct.
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_KEYWORD true) if $(D_PARAM T) is a struct,
+ *          $(D_KEYWORD false) otherwise.
+ */
 deprecated("Use is(T == struct) instead")
 enum bool isStruct(T) = is(T == struct);

+/**
+ * Tests whether $(D_PARAM T) is a enum.
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_KEYWORD true) if $(D_PARAM T) is an enum,
+ *          $(D_KEYWORD false) otherwise.
+ */
+deprecated("Use is(T == enum) instead")
+enum bool isEnum(T) = is(T == enum);
+
 /**
 * Determines whether $(D_PARAM T) is a polymorphic type, i.e. a
 * $(D_KEYWORD class) or an $(D_KEYWORD interface).
@ -317,7 +361,7 @@ enum bool isPolymorphicType(T) = is(T == class) || is(T == interface);
 */
 template hasStaticMember(T, string member)
 {
-    static if (hasMember!(T, member))
+    static if (__traits(hasMember, T, member))
    {
        alias Member = Alias!(__traits(getMember, T, member));

@ -340,7 +384,7 @@ template hasStaticMember(T, string member)
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S
+    static struct S
    {
         int member1;
         void member2()
@ -564,14 +608,14 @@ enum bool isBoolean(T) = is(Unqual!(OriginalType!T) == bool);
    }
    static assert(isBoolean!E);

-    struct S1
+    static struct S1
    {
        bool b;
        alias b this;
    }
    static assert(!isBoolean!S1);

-    struct S2
+    static struct S2
    {
        bool opCast(T : bool)()
        {
@ -691,7 +735,7 @@ template isPointer(T)
 {
    static if (is(T U : U*))
    {
-        enum bool isPointer = true;
+        enum bool isPointer = !is(Unqual!(OriginalType!T) == typeof(null));
    }
    else
    {
@ -708,6 +752,19 @@ template isPointer(T)
    static assert(!isPointer!bool);
 }

+// typeof(null) is not a pointer.
+@nogc nothrow pure @safe unittest
+{
+    static assert(!isPointer!(typeof(null)));
+    static assert(!isPointer!(const shared typeof(null)));
+
+    enum typeOfNull : typeof(null)
+    {
+        null_ = null,
+    }
+    static assert(!isPointer!typeOfNull);
+}
+
 /**
 * Determines whether $(D_PARAM T) is an array type (dynamic or static, but
 * not an associative one).
@ -889,7 +946,7 @@ enum bool isAggregateType(T) = is(T == struct)
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S;
+    static struct S;
    class C;
    interface I;
    union U;
@ -1111,20 +1168,20 @@ enum bool isCopyable(T) = is(typeof({ T s1 = T.init; T s2 = s1; }));
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S1
+    static struct S1
    {
    }
-    struct S2
+    static struct S2
    {
        this(this)
        {
        }
    }
-    struct S3
+    static struct S3
    {
        @disable this(this);
    }
-    struct S4
+    static struct S4
    {
        S3 s;
    }
@ -1219,7 +1276,7 @@ enum bool isTypeTuple(Args...) = allSatisfy!(isType, Args);
    union U
    {
    }
-    struct T()
+    static struct T()
    {
    }

@ -1629,7 +1686,7 @@ if (F.length == 1)
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S
+    static struct S
    {
        void opCall()
        {
@ -1654,7 +1711,7 @@ if (F.length == 1)

@nogc nothrow pure @safe unittest
 {
-    struct S
+    static struct S
    {
        @property int opCall()
        {
@ -1674,12 +1731,13 @@ if (F.length == 1)
 * Returns: $(D_KEYWORD true) if $(D_PARAM T) defines a symbol
 *          $(D_PARAM member), $(D_KEYWORD false) otherwise.
 */
+deprecated("Use __traits(hasMember) instead")
 enum bool hasMember(T, string member) = __traits(hasMember, T, member);

 ///
@nogc nothrow pure @safe unittest
 {
-    struct S
+    static struct S
    {
         int member1;
         void member2()
@ -1734,7 +1792,7 @@ template isMutable(T)
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S
+    static struct S
    {
        void method()
        {
@ -1758,6 +1816,10 @@ template isMutable(T)
 }

 /**
+ * Determines whether $(D_PARAM T) is a nested type, i.e. $(D_KEYWORD class),
+ * $(D_KEYWORD struct) or $(D_KEYWORD union), which internally stores a context
+ * pointer.
+ *
 * Params:
 *  T = $(D_KEYWORD class), $(D_KEYWORD struct) or $(D_KEYWORD union) type.
 *
@ -1788,6 +1850,8 @@ pure nothrow @safe unittest
 }

 /**
+ * Determines whether $(D_PARAM T) is a nested function.
+ *
 * Params:
 *  F = A function.
 *
@ -1809,6 +1873,8 @@ enum bool isNestedFunction(alias F) = __traits(isNested, F);
 }

 /**
+ * Determines the type of the callable $(D_PARAM F).
+ *
 * Params:
 *  F = A function.
 *
@ -1864,7 +1930,7 @@ if (isCallable!F)
    }
    static assert(is(FunctionTypeOf!(I.prop) == function));

-    struct S
+    static struct S
    {
        void opCall()
        {
@ -1885,7 +1951,7 @@ if (isCallable!F)

@nogc nothrow pure @safe unittest
 {
-    struct S2
+    static struct S2
    {
        @property int opCall()
        {
@ -1898,6 +1964,8 @@ if (isCallable!F)
 }

 /**
+ * Determines the return type of the callable $(D_PARAM F).
+ *
 * Params:
 *  F = A callable object.
 *
@ -1936,7 +2004,7 @@ alias TemplateOf(alias T : Base!Args, alias Base, Args...) = Base;
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S(T)
+    static struct S(T)
    {
    }
    static assert(isSame!(TemplateOf!(S!int), S));
@ -1992,7 +2060,7 @@ template isInstanceOf(alias T, alias I)
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S(T)
+    static struct S(T)
    {
    }
    static assert(isInstanceOf!(S, S!int));
@ -2251,23 +2319,22 @@ template isAssignable(Lhs, Rhs = Lhs)
 ///
@nogc nothrow pure @safe unittest
 {
-    struct S1
+    static struct S1
    {
        @disable this();
        @disable this(this);
    }
-    struct S2
+    static struct S2
    {
        void opAssign(S1 s) pure nothrow @safe @nogc
        {
        }
    }
-    struct S3
+    static struct S3
    {
        void opAssign(ref S1 s) pure nothrow @safe @nogc
        {
        }
-
    }
    static assert(isAssignable!(S2, S1));
    static assert(!isAssignable!(S3, S1));
@ -2822,7 +2889,7 @@ if (is(T == class))
    }
    static assert(classInstanceAlignment!C1 == C1.alignof);

-    struct S
+    static struct S
    {
        align(8)
        uint s;
@ -2862,12 +2929,12 @@ template ifTestable(T, alias pred = a => a)
 {
    static assert(ifTestable!int);

-    struct S1
+    static struct S1
    {
    }
    static assert(!ifTestable!S1);

-    struct S2
+    static struct S2
    {
        bool opCast(T : bool)()
        {
@ -2934,7 +3001,7 @@ alias getUDAs(alias symbol) = AliasSeq!(__traits(getAttributes, symbol));
 ///
@nogc nothrow pure @safe unittest
 {
-    struct Attr
+    static struct Attr
    {
        int i;
    }
@ -2953,7 +3020,7 @@ alias getUDAs(alias symbol) = AliasSeq!(__traits(getAttributes, symbol));
    static assert(getUDAs!(c, "String").length == 0);
    static assert(getUDAs!(c, 4).length == 0);

-    struct T(U)
+    static struct T(U)
    {
        enum U s = 7;
        U i;
@ -2989,10 +3056,10 @@ template hasUDA(alias symbol, alias attr)
 ///
@nogc nothrow pure @safe unittest
 {
-    struct Attr1
+    static struct Attr1
    {
    }
-    struct Attr2
+    static struct Attr2
    {
    }
    @Attr1 int a;
@ -3055,3 +3122,60 @@ template isInnerClass(T)
    }
    static assert(!isInnerClass!(RefCountedStore!int));
 }
+
+/**
+ * Returns the types of all members of $(D_PARAM T).
+ *
+ * If $(D_PARAM T) is a $(D_KEYWORD struct) or $(D_KEYWORD union) or
+ * $(D_KEYWORD class), returns the types of all its fields. It is actually the
+ * same as `T.tupleof`, but the content pointer for the nested type isn't
+ * included.
+ *
+ * If $(D_PARAM T) is neither a $(D_KEYWORD struct) nor $(D_KEYWORD union) nor
+ * $(D_KEYWORD class), $(D_PSYMBOL Fields) returns an $(D_PSYMBOL AliasSeq)
+ * with the single element $(D_PARAM T).
+ *
+ * Params:
+ *  T = A type.
+ *
+ * Returns: $(D_PARAM T)'s fields.
+ */
+template Fields(T)
+{
+    static if ((is(T == struct) || is(T == union)) && isNested!T)
+    {
+        // The last element of .tupleof of a nested struct or union is "this",
+        // the context pointer, type "void*".
+        alias Fields = typeof(T.tupleof[0 .. $ - 1]);
+    }
+    else static if (is(T == class) || is(T == struct) || is(T == union))
+    {
+        alias Fields = typeof(T.tupleof);
+    }
+    else
+    {
+        alias Fields = AliasSeq!T;
+    }
+}
+
+///
+@nogc nothrow pure @safe unittest
+{
+    struct Nested
+    {
+        int i;
+
+        void func()
+        {
+        }
+    }
+    static assert(is(Fields!Nested == AliasSeq!int));
+
+    class C
+    {
+        uint u;
+    }
+    static assert(is(Fields!C == AliasSeq!uint));
+
+    static assert(is(Fields!short == AliasSeq!short));
+}
--- a/source/tanya/meta/transform.d
+++ b/source/tanya/meta/transform.d
@ -9,7 +9,7 @@
 * types. They take some type as argument and return a different type after
 * perfoming the specified transformation.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
--- a/source/tanya/net/inet.d
+++ b/source/tanya/net/inet.d
@ -77,7 +77,7 @@ struct NetworkOrder(uint L)
    {
        assert(value <= pow(2, L * 8) - 1);
    }
-    body
+    do
    {
        this.value = value & StorageType.max;
    }
@ -92,7 +92,7 @@ struct NetworkOrder(uint L)
    {
        assert(this.length > 0);
    }
-    body
+    do
    {
        return this.value & 0xff;
    }
@ -107,7 +107,7 @@ struct NetworkOrder(uint L)
    {
        assert(this.length > 0);
    }
-    body
+    do
    {
        return (this.value >> ((this.length - 1) * 8)) & 0xff;
    }
@ -122,7 +122,7 @@ struct NetworkOrder(uint L)
    {
        assert(this.length > 0);
    }
-    body
+    do
    {
        this.value >>= 8;
        --this.size;
@ -138,7 +138,7 @@ struct NetworkOrder(uint L)
    {
        assert(this.length > 0);
    }
-    body
+    do
    {
        this.value &= StorageType.max >> ((StorageType.sizeof - this.length) * 8);
        --this.size;
--- a/source/tanya/network/socket.d
+++ b/source/tanya/network/socket.d
@ -185,7 +185,7 @@ else version (Windows)
        {
            assert(count >= 0);
        }
-        body
+        do
        {
            DWORD lpNumber;
            BOOL result = GetOverlappedResult(overlapped.handle,
@ -259,7 +259,7 @@ else version (Windows)
        {
            assert(count >= 0);
        }
-        body
+        do
        {
            DWORD lpNumber;
            BOOL result = GetOverlappedResult(overlapped.handle,
@ -720,7 +720,7 @@ abstract class Socket
        assert(handle != SocketType.init);
        assert(handle_ == SocketType.init, "Socket handle cannot be changed");
    }
-    body
+    do
    {
        handle_ = handle;

@ -749,7 +749,7 @@ abstract class Socket
    {
        assert(handle != SocketType.init);
    }
-    body
+    do
    {
        scope (failure)
        {
--- a/source/tanya/os/error.d
+++ b/source/tanya/os/error.d
@ -5,7 +5,7 @@
 /**
 * This module provides a portable way of using operating system error codes.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -14,6 +14,8 @@
 */
 module tanya.os.error;

+import tanya.meta.trait;
+
 // Socket API error.
 private template SAError(int posix, int wsa = posix)
 {
@ -120,7 +122,7 @@ struct ErrorCode
        /// Protocol not available.
        noProtocolOption          = SAError!(92, 42),

-        /// The protocol is not implemented orR has not been configured.
+        /// The protocol is not implemented or has not been configured.
        protocolNotSupported      = SAError!(93, 43),

        /// The support for the specified socket type does not exist in this
@ -186,19 +188,66 @@ struct ErrorCode
        cancelled                 = SAError!(125, 103),
    }

+    /**
+     * Error descriptions.
+     */
+    private enum ErrorStr : string
+    {
+        success                   = "The operation completed successfully",
+        noPermission              = "Operation not permitted",
+        interrupted               = "Interrupted system call",
+        badDescriptor             = "Bad file descriptor",
+        wouldBlock                = "An operation on a non-blocking socket would block",
+        noMemory                  = "Out of memory",
+        accessDenied              = "Access denied",
+        fault                     = "An invalid pointer address detected",
+        noSuchDevice              = "No such device",
+        invalidArgument           = "An invalid argument was supplied",
+        tooManyDescriptors        = "The limit on the number of open file descriptors",
+        noDescriptors             = "The limit on the number of open file descriptors",
+        brokenPipe                = "Broken pipe",
+        nameTooLong               = "The name was too long",
+        notSocket                 = "A socket operation was attempted on a non-socket",
+        protocolError             = "Protocol error",
+        messageTooLong            = "Message too long",
+        wrongProtocolType         = "Wrong protocol type for socket",
+        noProtocolOption          = "Protocol not available",
+        protocolNotSupported      = "The protocol is not implemented or has not been configured",
+        socketNotSupported        = "Socket type not supported",
+        operationNotSupported     = "The address family is no supported by the protocol family",
+        addressFamilyNotSupported = "Address family specified is not supported",
+        addressInUse              = "Address already in use",
+        networkDown               = "The network is not available",
+        networkUnreachable        = "No route to host",
+        networkReset              = "Network dropped connection because of reset",
+        connectionAborted         = "The connection has been aborted",
+        connectionReset           = "Connection reset by peer",
+        noBufferSpace             = "No free buffer space is available for a socket operation",
+        alreadyConnected          = "Transport endpoint is already connected",
+        notConnected              = "Transport endpoint is not connected",
+        shutdown                  = "Cannot send after transport endpoint shutdown",
+        timedOut                  = "Operation timed out",
+        connectionRefused         = "Connection refused",
+        hostDown                  = "Host is down",
+        hostUnreachable           = "No route to host",
+        alreadyStarted            = "Operation already in progress",
+        inProgress                = "Operation now in progress",
+        cancelled                 = "Operation cancelled",
+    }
+
    /**
     * Constructor.
     *
     * Params:
     *  value = Numeric error code.
     */
-    this(const ErrorNo value) pure nothrow @safe @nogc
+    this(const ErrorNo value) @nogc nothrow pure @safe
    {
        this.value_ = value;
    }

    ///
-    pure nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        ErrorCode ec;
        assert(ec == ErrorCode.success);
@ -211,13 +260,13 @@ struct ErrorCode
     * Resets this $(D_PSYMBOL ErrorCode) to default
     * ($(D_PSYMBOL ErrorCode.success)).
     */
-    void reset() pure nothrow @safe @nogc
+    void reset() @nogc nothrow pure @safe
    {
        this.value_ = ErrorNo.success;
    }

    ///
-    pure nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        auto ec = ErrorCode(ErrorCode.fault);
        assert(ec == ErrorCode.fault);
@ -241,7 +290,7 @@ struct ErrorCode
    }

    ///
-    pure nothrow @safe @nogc unittest
+    @nogc nothrow pure @safe unittest
    {
        ErrorCode ec = ErrorCode.fault;
        auto errorNo = cast(ErrorCode.ErrorNo) ec;
@ -258,23 +307,21 @@ struct ErrorCode
     *
     * Returns: $(D_KEYWORD this).
     */
-    ref ErrorCode opAssign(const ErrorNo that) pure nothrow @safe @nogc
+    ref ErrorCode opAssign(const ErrorNo that) @nogc nothrow pure @safe
    {
        this.value_ = that;
        return this;
    }

    /// ditto
-    ref ErrorCode opAssign()(auto ref const ErrorCode that)
-    pure nothrow @safe @nogc
+    ref ErrorCode opAssign(const ErrorCode that) @nogc nothrow pure @safe
    {
        this.value_ = that.value_;
        return this;
    }

    ///
-    pure nothrow @safe @nogc unittest
-    {
+    @nogc nothrow pure @safe unittest
    {
        ErrorCode ec;
        assert(ec == ErrorCode.success);
@ -282,6 +329,9 @@ struct ErrorCode
        ec = ErrorCode.fault;
        assert(ec == ErrorCode.fault);
    }
+
+    ///
+    @nogc nothrow pure @safe unittest
    {
        auto ec1 = ErrorCode(ErrorCode.fault);
        ErrorCode ec2;
@ -290,7 +340,6 @@ struct ErrorCode
        ec2 = ec1;
        assert(ec1 == ec2);
    }
-    }

    /**
     * Equality with another error code or error code number.
@ -300,21 +349,19 @@ struct ErrorCode
     *
     * Returns: Whether $(D_KEYWORD this) and $(D_PARAM that) are equal.
     */
-    bool opEquals(const ErrorNo that) const pure nothrow @safe @nogc
+    bool opEquals(const ErrorNo that) const @nogc nothrow pure @safe
    {
        return this.value_ == that;
    }

    /// ditto
-    bool opEquals()(auto ref const ErrorCode that)
-    const pure nothrow @safe @nogc
+    bool opEquals(const ErrorCode that) const @nogc nothrow pure @safe
    {
        return this.value_ == that.value_;
    }

    ///
-    pure nothrow @safe @nogc unittest
-    {
+    @nogc nothrow pure @safe unittest
    {
        ErrorCode ec1 = ErrorCode.fault;
        ErrorCode ec2 = ErrorCode.accessDenied;
@ -323,6 +370,9 @@ struct ErrorCode
        assert(ec1 != ErrorCode.accessDenied);
        assert(ErrorCode.fault != ec2);
    }
+
+    ///
+    @nogc nothrow pure @safe unittest
    {
        ErrorCode ec1 = ErrorCode.fault;
        ErrorCode ec2 = ErrorCode.fault;
@ -331,6 +381,36 @@ struct ErrorCode
        assert(ec1 == ErrorCode.fault);
        assert(ErrorCode.fault == ec2);
    }
+
+    /**
+     * Returns string describing the error number. If a description for a
+     * specific error number is not available, returns $(D_KEYWORD null).
+     *
+     * Returns: String describing the error number.
+     */
+    string toString() const @nogc nothrow pure @safe
+    {
+        foreach (e; __traits(allMembers, ErrorNo))
+        {
+            if (__traits(getMember, ErrorNo, e) == this.value_)
+            {
+                return __traits(getMember, ErrorStr, e);
+            }
+        }
+        return null;
+    }
+
+    ///
+    @nogc nothrow pure @safe unittest
+    {
+        ErrorCode ec = ErrorCode.fault;
+        assert(ec.toString() == "An invalid pointer address detected");
+    }
+
+    @nogc nothrow pure @safe unittest
+    {
+        ErrorCode ec = cast(ErrorCode.ErrorNo) -1;
+        assert(ec.toString() is null);
    }

    private ErrorNo value_ = ErrorNo.success;
--- a/source/tanya/range/array.d
+++ b/source/tanya/range/array.d
@ -59,13 +59,13 @@ in
 {
    assert(array.length > 0);
 }
-body
+do
 {
    return array[0];
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    string s = "Wenn die Wunde nicht mehr wehtut, schmerzt die Narbe";
    static assert(is(typeof(s.front) == immutable char));
@ -99,13 +99,13 @@ in
 {
    assert(array.length > 0);
 }
-body
+do
 {
    return array[$ - 1];
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    string s = "Brecht";
    static assert(is(typeof(s.back) == immutable char));
@ -138,7 +138,7 @@ in
 {
    assert(array.length > 0);
 }
-body
+do
 {
    array = array[1 .. $];
 }
@ -149,13 +149,13 @@ in
 {
    assert(array.length > 0);
 }
-body
+do
 {
    array = array[0 .. $ - 1];
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    wstring array = "Der finstere Ozean der Metaphysik. Nietzsche";

@ -184,7 +184,7 @@ pure nothrow @safe @nogc unittest
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    int[1] array;
    assert(!array.empty);
@ -209,7 +209,7 @@ pure nothrow @safe @nogc unittest
 }

 ///
-pure nothrow @safe @nogc unittest
+@nogc nothrow pure @safe unittest
 {
    ubyte[8] array;
    auto slice = array.save;
--- a/source/tanya/range/primitive.d
+++ b/source/tanya/range/primitive.d
--- a/source/tanya/typecons.d
+++ b/source/tanya/typecons.d
@ -8,7 +8,7 @@
 * This module contains templates that allow to build new types from the
 * available ones.
 *
- * Copyright: Eugene Wissner 2017.
+ * Copyright: Eugene Wissner 2017-2018.
 * License: $(LINK2 https://www.mozilla.org/en-US/MPL/2.0/,
 *                  Mozilla Public License, v. 2.0).
 * Authors: $(LINK2 mailto:info@caraus.de, Eugene Wissner)
@ -36,7 +36,7 @@ import tanya.meta.metafunction;
 */
 template Pair(Specs...)
 {
-    template parseSpecs(int fieldCount, Specs...)
+    template parseSpecs(size_t fieldCount, Specs...)
    {
        static if (Specs.length == 0)
        {
@ -47,13 +47,13 @@ template Pair(Specs...)
            static if (is(typeof(Specs[1]) == string))
            {
                alias parseSpecs
-                    = AliasSeq!(Specs[0],
+                    = AliasSeq!(Tuple!(Specs[0], Specs[1]),
                                parseSpecs!(fieldCount + 1, Specs[2 .. $]));
            }
            else
            {
                alias parseSpecs
-                    = AliasSeq!(Specs[0],
+                    = AliasSeq!(Tuple!(Specs[0]),
                                parseSpecs!(fieldCount + 1, Specs[1 .. $]));
            }
        }
@ -63,25 +63,24 @@ template Pair(Specs...)
        }
    }

+    alias ChooseType(alias T) = T.Seq[0];
+    alias ParsedSpecs = parseSpecs!(0, Specs);
+
+    static assert(ParsedSpecs.length == 2, "Invalid argument count");
+
    struct Pair
    {
        /// Field types.
-        alias Types = parseSpecs!(0, Specs);
-
-        static assert(Types.length == 2, "Invalid argument count.");
+        alias Types = Map!(ChooseType, ParsedSpecs);

        // Create field aliases.
-        static if (is(typeof(Specs[1]) == string))
+        static if (ParsedSpecs[0].length == 2)
        {
-            mixin("alias " ~ Specs[1] ~ " = expand[0];");
+            mixin("alias " ~ ParsedSpecs[0][1] ~ " = expand[0];");
        }
-        static if (is(typeof(Specs[2]) == string))
+        static if (ParsedSpecs[1].length == 2)
        {
-            mixin("alias " ~ Specs[2] ~ " = expand[1];");
-        }
-        else static if (is(typeof(Specs[3]) == string))
-        {
-            mixin("alias " ~ Specs[3] ~ " = expand[1];");
+            mixin("alias " ~ ParsedSpecs[1][1] ~ " = expand[1];");
        }

        /// Represents the values of the $(D_PSYMBOL Pair) as a list of values.
@ -92,7 +91,16 @@ template Pair(Specs...)
 }

 ///
-unittest
+@nogc nothrow pure @safe unittest
+{
+    auto pair = Pair!(int, "first", string, "second")(1, "second");
+    assert(pair.first == 1);
+    assert(pair[0] == 1);
+    assert(pair.second == "second");
+    assert(pair[1] == "second");
+}
+
+@nogc nothrow pure @safe unittest
 {
    static assert(is(Pair!(int, int)));
    static assert(!is(Pair!(int, 5)));
Author	SHA1	Message	Date
Eugen Wissner	792d289541	range.primitive: Add missing rparen to the docs	2018-03-27 05:19:14 +02:00
Eugen Wissner	92f21a95cf	Add hashing pointers	2018-03-27 05:18:46 +02:00
Eugen Wissner	72140a8583	Add documentation for the hash function	2018-03-27 05:09:44 +02:00
Eugen Wissner	442fa5b46a	Fix hashing scalar types	2018-03-27 05:09:22 +02:00
Eugen Wissner	0d6d8f6a91	Add hash combining for ranges	2018-03-27 05:09:09 +02:00
Eugen Wissner	cefc4e24b5	Add FNV-1a test vectors	2018-03-27 05:08:55 +02:00
Eugen Wissner	1adc4cd868	Add hash.lookup module	2018-03-27 05:08:28 +02:00
Eugen Wissner	8faccbada4	Deprecate meta.trait.hasMember	2018-03-26 20:38:57 +02:00
Eugen Wissner	9fb043ba65	Fix typeof(null) being a pointer for isPointer	2018-03-25 09:19:35 +02:00
Eugen Wissner	162db622ea	Add assignable-, lvalue- and swappable checks ... for ranges. Also adds "put" for the output ranges. Fix #34.	2018-03-23 08:49:24 +01:00
Eugen Wissner	a7c1e642e9	Implement moveFront, moveBack, moveAt ... and hasMobileElements.	2018-03-22 10:44:58 +01:00
Eugen Wissner	7829b1fe06	Remove static std.range import	2018-03-22 10:44:52 +01:00
Eugen Wissner	cb742eec82	meta.trait: Deprecate one-liner These one-liners are useful for meta-programming but they can be easely implemented. It isn't possible to implement all possible variants in a generic library, so it is better they are defined in the user code. Deprecated traits: - isPOD - sizeOf - alignOf - isSame - isTemplate - isInterface - isClass - isStruct - isEnum	2018-03-21 10:10:55 +01:00
Eugen Wissner	341068488d	meta.trait: Make unittest structs static	2018-03-21 10:04:05 +01:00
Eugen Wissner	9b0bc77b7a	async: Remove unused imports	2018-03-21 08:30:47 +01:00
Eugen Wissner	c9e4871fb5	algorithm.mutation: Fix param name in the docs	2018-03-21 08:15:58 +01:00
Eugen Wissner	1f4ab88254	typecons.Pair: Add better documentation unittests	2018-03-21 08:14:52 +01:00
Eugen Wissner	7af5b4db72	metafunction: Make Set and Tuple to structs It allows to use alias this to access the elements by index.	2018-03-20 17:20:13 +01:00
Eugen Wissner	363ebbe3df	Extend release policy	2018-03-18 05:53:38 +01:00
Eugen Wissner	ecd74cbf1e	Describe NogcD subset	2018-03-17 08:17:51 +01:00
Eugen Wissner	80a177179d	Add hash table to the "Current status" branches	2018-03-15 05:46:42 +01:00
Eugen Wissner	2532d49105	Ignore .lib files	2018-03-11 11:40:46 +01:00
Eugen Wissner	abfccc35a2	Merge remote-tracking branch 'origin/feature/queue-dlist' Fix #31.	2018-03-10 07:41:02 +01:00
Eugen Wissner	629071f934	Add information that DList can be used as a queue	2018-03-10 07:17:43 +01:00
Eugen Wissner	17cb592b13	Replace Queue with DList	2018-03-09 08:19:17 +01:00
Eugen Wissner	82f41844b1	container.list: Document front/back preconditions	2018-03-09 08:00:28 +01:00
Eugen Wissner	8fa033a49f	Fix #32	2018-03-09 05:27:32 +01:00
Eugen Wissner	e77a499fa2	Annotate typecons unittests	2018-03-07 06:52:35 +01:00
Eugen Wissner	54bcec216e	Deprecate MmapPool for the standard build Mallocator is the default allocator now and should be used instead.	2018-03-06 05:29:15 +01:00
Eugen Wissner	fbbdb36853	Use defaultAllocator in the async Instead of hard-coded MmapPool.	2018-03-05 17:42:44 +01:00
Eugen Wissner	b795267e75	Rename ErrorCode.text() to toString()	2018-03-04 10:43:24 +01:00
Eugen Wissner	81cbb96d45	Merge remote-tracking branch 'n8sh/isRandomAccessRange-definition'	2018-03-04 09:29:09 +01:00
Nathan Sashihara	467335460e	Decouple isRandomAccessRange from isForwardRange and isBidirectionalRange	2018-03-04 03:02:18 -05:00
Eugen Wissner	dc3b083097	Add dmd 2.079.0	2018-03-03 08:34:06 +01:00
Eugen Wissner	16c5fa12df	Implement Error.text() Error.text() returns an error description.	2018-03-02 06:48:03 +01:00
Eugen Wissner	9bf8754711	Fix setting new head/tail after removing in DList	2018-02-26 08:09:14 +01:00
Eugen Wissner	760cea163d	Add a workaround for dmd 2.076.1 on OSX	2018-02-25 21:33:29 +01:00
Eugen Wissner	03c40ecace	Fix removing all elements from DList	2018-02-25 18:25:19 +01:00
Eugen Wissner	9c70e9a058	Annotate list unittests	2018-02-25 15:42:32 +01:00
Eugen Wissner	5ae20512af	Fix inserting before/after a range into the string	2018-02-25 12:53:42 +01:00
Eugen Wissner	d30de300d6	Fix slicing a null pointer when deallocating	2018-02-25 11:09:57 +01:00
Eugen Wissner	464a0fecbb	Make math.nbtheory.ln to a template function	2018-02-25 05:38:21 +01:00
Eugen Wissner	84d6e207c5	Ignore dub.selections.json	2018-02-24 06:42:06 +01:00
Eugen Wissner	af942116e4	Merge remote-tracking branch 'n8sh/getrandom-syscall' Fix #18.	2018-02-22 05:25:59 +01:00
Nathan Sashihara	7ee4af9e79	Use correct getrandom linux syscall on non-x86_64	2018-02-21 04:49:48 -05:00
Nathan Sashihara	9876d9245c	Implement PlatformEntropySource for macOS, Microsoft Windows, NetBSD, OpenBSD, Solaris	2018-02-21 03:18:52 -05:00
Eugen Wissner	bd2b88f16e	Update latest supported dmd to 2.078.3	2018-02-16 16:35:53 +01:00
Eugen Wissner	2946fd7f81	Update dmd to 2.078.2	2018-02-15 18:33:54 +01:00
Eugen Wissner	2cda82eeea	Fix handling of misaligned bytes in fill	2018-02-04 07:23:56 +01:00
Eugen Wissner	e9f70853c6	Fix #12	2018-02-02 16:13:55 +01:00
Eugen Wissner	4aaa71a7d0	Format ranges	2018-02-02 14:34:36 +01:00
Eugen Wissner	cbc68c2c43	Implement formatting for enums	2018-02-01 16:29:13 +01:00
Eugen Wissner	048ddf21ff	Replace body with do	2018-01-31 12:05:06 +01:00
Eugen Wissner	fd02c411e1	Update latest dmd version to 2.078.1	2018-01-23 05:21:19 +01:00
Eugen Wissner	b69d737845	Add typeid formatting tests	2018-01-16 17:44:09 +01:00
Eugen Wissner	904451ccaa	Remove moved and deprecated conv module	2018-01-14 19:13:12 +01:00
Eugen Wissner	c1864cf473	Add dynamic library target	2018-01-13 06:21:42 +01:00
Eugen Wissner	8db1851c5c	Update dmd to 2.078.0	2018-01-04 05:36:46 +01:00
Eugen Wissner	12de700706	Fix formatting null class references	2017-12-16 09:42:57 +01:00
Eugen Wissner	78a8afdf75	Format stringish ranges	2017-12-15 22:42:18 +01:00
Eugen Wissner	3c996d7c57	Add struct formatting	2017-12-14 19:47:13 +01:00
Eugen Wissner	2a68048fc1	Put real formatting code into a separate function	2017-12-09 10:02:54 +01:00
Eugen Wissner	907f7a4e61	Remove IO branch	2017-12-09 09:53:23 +01:00
Eugen Wissner	670328c047	Drop support for 2.075.1	2017-12-08 10:58:39 +01:00
Eugen Wissner	7fe69ccc5c	format: Aggregate types	2017-12-08 10:56:59 +01:00
Eugen Wissner	26c3532e28	Wrap formatting into printToString printToString gets the output string as argument and can be called recursive with the same output string to format ranges.	2017-12-03 19:53:06 +01:00
Eugen Wissner	75ce854192	Support dmd 2.077.1	2017-12-02 10:40:40 +01:00
Eugen Wissner	9e16d84f9e	Reintroduce isStruct, isClass and isInterface since they can be useful for generic programming.	2017-11-29 19:53:28 +01:00
Eugen Wissner	7e7bf40f70	Move remaining to methods to tanya.conv	2017-11-29 19:09:58 +01:00
Eugen Wissner	642717883e	Add boolean and null formatting	2017-11-29 18:44:51 +01:00
Eugen Wissner	85be35c5e0	Make floating formatting safe	2017-11-29 07:49:20 +01:00
Eugen Wissner	664298f038	Remove buffer argument from format	2017-11-28 22:11:19 +01:00
Eugen Wissner	c199cdd47c	Merge changes to reals formatting from master	2017-11-28 09:32:20 +01:00
Eugen Wissner	3a24e9e462	Make pointer to string conversion safer	2017-11-27 15:10:17 +01:00
Eugen Wissner	f334e6a1a0	Check format specifier at compile time	2017-11-25 22:29:45 +01:00
Eugen Wissner	72d5760589	Change default pointer format	2017-11-25 19:01:20 +01:00
Eugen Wissner	b28dde9d8e	Remove triplet comma	2017-11-25 17:10:59 +01:00
Eugen Wissner	b612e978bf	format: Add format string tests	2017-11-25 15:24:45 +01:00
Eugene Wissner	02d1d8218b	Port vsprintf	2017-11-25 15:11:43 +01:00
Eugen Wissner	fbf6ec5250	format: Check if the scientific form is to be used	2017-11-25 14:59:27 +01:00
Eugen Wissner	ac317aa9d6	math.min: Drop useless second isFloatingPoint check	2017-11-19 22:37:15 +01:00
Eugen Wissner	10022d158c	Replace aho/ali usage with HP	2017-11-16 19:28:44 +01:00
Eugen Wissner	a38242d0ac	Make real2String more readable	2017-11-16 19:19:18 +01:00
Eugen Wissner	a84c71f26d	Revert usage of "do" instead of "body" And fix GCC build.	2017-11-16 19:15:56 +01:00
Eugen Wissner	7797f0a1fe	format.conv.number2String -> format.integral2String (intern)	2017-11-12 11:57:47 +01:00
Eugen Wissner	4bbc8b510a	conv: Use assertThrown to check ConvException is thrown	2017-11-12 11:44:45 +01:00
Eugen Wissner	87ea1f98dc	Add range primitives that remove several elements - isOutputRange - popFrontN - popFrontExactly - popBackN - popBackExactly	2017-11-05 07:00:10 +01:00
Eugen Wissner	9422888b6c	Support dmd 2.075.1 - 2.077.0	2017-11-04 00:35:47 +01:00
Eugen Wissner	13407fcf8a	math: Add min/max	2017-11-02 06:00:11 +01:00
Eugen Wissner	e06cc5a071	Fix moveEmplace for static arrays	2017-11-01 14:27:39 +01:00
Eugen Wissner	12fb9ff9f6	Add algorithm.mutation.swap	2017-11-01 13:03:48 +01:00
Eugen Wissner	392cdcf192	Fix moveEmplace not being pure	2017-11-01 12:30:27 +01:00
Eugen Wissner	09b6655b9a	memory.op: Check for valid .ptr and .length typeid(T).initializer can return an array, whose .ptr is null but the length not. Assert that .ptr and .length are consistent.	2017-11-01 00:01:43 +01:00
Eugen Wissner	7a2768340e	Add algorithm package with move and moveEmplace	2017-10-29 07:51:00 +01:00
Eugen Wissner	414d7a11a8	Add meta.trait.Fields	2017-10-27 20:28:34 +02:00
Eugen Wissner	0d69c7fc79	Make math.mp.Integer pure	2017-10-24 11:50:32 +02:00