Add KeyValue alias for value tuple

source/tanya/container/entry.d

@@ -52,7 +52,7 @@ package struct Bucket(K, V = void)
     }
     else
     {
-        alias KV = Pair!(K, "key", V, "value");
+        alias KV = Tuple!(K, "key", V, "value");
         KV kv;
     }
     BucketStatus status = BucketStatus.empty;
@@ -239,7 +239,7 @@ package struct HashArray(alias hasher, K, V = void)
         return 0;
     }
 
-    bool canFind(ref const Key key) const
+    bool opBinaryRight(string op : "in")(ref inout(Key) key) inout
     {
         auto bucketPosition = locateBucket(key);
         foreach (ref e; this.array[bucketPosition .. $])

source/tanya/container/hashtable.d

@@ -20,7 +20,6 @@ import tanya.hash.lookup;
 import tanya.memory;
 import tanya.meta.trait;
 import tanya.meta.transform;
-import tanya.typecons;
 
 /**
  * Bidirectional range whose element type is a tuple of a key and the
@@ -162,6 +161,9 @@ if (is(typeof(hasher(Key.init)) == size_t))
 
     private HashArray data;
 
+    /// Type of the key-value pair stored in the hash table.
+    alias KeyValue = HashArray.Bucket.KV;
+
     /// The range types for $(D_PSYMBOL HashTable).
     alias Range = .Range!HashArray;
 
@@ -384,6 +386,21 @@ if (is(typeof(hasher(Key.init)) == size_t))
         return e.kv.value;
     }
 
+    ///
+    @nogc nothrow pure @safe unittest
+    {
+        HashTable!(string, int) hashTable;
+        assert("Pachycephalosaurus" !in hashTable);
+
+        hashTable["Pachycephalosaurus"] = 6;
+        assert(hashTable.length == 1);
+        assert("Pachycephalosaurus" in hashTable);
+
+        hashTable["Pachycephalosaurus"] = 6;
+        assert(hashTable.length == 1);
+        assert("Pachycephalosaurus" in hashTable);
+    }
+
     /**
      * Find the element with the key $(D_PARAM key).
      *
@@ -408,6 +425,14 @@ if (is(typeof(hasher(Key.init)) == size_t))
         assert(false, "Range violation");
     }
 
+    ///
+    @nogc nothrow pure @safe unittest
+    {
+        HashTable!(string, int) hashTable;
+        hashTable["Triceratops"] = 7;
+        assert(hashTable["Triceratops"] == 7);
+    }
+
     /**
      * Removes the element with the key $(D_PARAM key).
      *
@@ -426,6 +451,18 @@ if (is(typeof(hasher(Key.init)) == size_t))
         return this.data.remove(key);
     }
 
+    ///
+    @nogc nothrow pure @safe unittest
+    {
+        HashTable!(string, int) hashTable;
+        hashTable["Euoplocephalus"] = 6;
+
+        assert("Euoplocephalus" in hashTable);
+        assert(hashTable.remove("Euoplocephalus") == 1);
+        assert(hashTable.remove("Euoplocephalus") == 0);
+        assert("Euoplocephalus" !in hashTable);
+    }
+
     /**
      * Looks for $(D_PARAM key) in this hash table.
      *
@@ -435,9 +472,21 @@ if (is(typeof(hasher(Key.init)) == size_t))
      * Returns: $(D_KEYWORD true) if $(D_PARAM key) exists in the hash table,
      *          $(D_KEYWORD false) otherwise.
      */
-    bool opBinaryRight(string op : "in")(Key key)
+    bool opBinaryRight(string op : "in")(auto ref inout(Key) key) inout
     {
-        return this.data.canFind(key);
+        return key in this.data;
+    }
+
+    ///
+    @nogc nothrow pure @safe unittest
+    {
+        HashTable!(string, int) hashTable;
+
+        assert("Shantungosaurus" !in hashTable);
+        hashTable["Shantungosaurus"] = 15;
+        assert("Shantungosaurus" in hashTable);
+
+        assert("Ceratopsia" !in hashTable);
     }
 
     /**
@@ -484,6 +533,18 @@ if (is(typeof(hasher(Key.init)) == size_t))
     {
         return typeof(return)(this.data.array[]);
     }
+
+    ///
+    @nogc nothrow pure @safe unittest
+    {
+        HashTable!(string, int) hashTable;
+        assert(hashTable[].empty);
+
+        hashTable["Iguanodon"] = 9;
+        assert(!hashTable[].empty);
+        assert(hashTable[].front == hashTable.KeyValue("Iguanodon", 9));
+        assert(hashTable[].back == hashTable.KeyValue("Iguanodon", 9));
+    }
 }
 
 @nogc nothrow pure @safe unittest
@@ -491,32 +552,19 @@ if (is(typeof(hasher(Key.init)) == size_t))
     auto dinos = HashTable!(string, int)(17);
     assert(dinos.empty);
 
-    dinos["Euoplocephalus"] = 6;
-    dinos["Triceratops"] = 7;
-    dinos["Pachycephalosaurus"] = 6;
-    dinos["Shantungosaurus"] = 15;
     dinos["Ornithominus"] = 4;
     dinos["Tyrannosaurus"] = 12;
     dinos["Deinonychus"] = 3;
-    dinos["Iguanodon"] = 9;
     dinos["Stegosaurus"] = 6;
     dinos["Brachiosaurus"] = 25;
 
-    assert(dinos.length == 10);
+    assert(dinos.length == 5);
-    assert(dinos["Iguanodon"] == 9);
     assert(dinos["Ornithominus"] == 4);
     assert(dinos["Stegosaurus"] == 6);
-    assert(dinos["Euoplocephalus"] == 6);
     assert(dinos["Deinonychus"] == 3);
     assert(dinos["Tyrannosaurus"] == 12);
-    assert(dinos["Pachycephalosaurus"] == 6);
-    assert(dinos["Shantungosaurus"] == 15);
-    assert(dinos["Triceratops"] == 7);
     assert(dinos["Brachiosaurus"] == 25);
 
-    assert("Shantungosaurus" in dinos);
-    assert("Ceratopsia" !in dinos);
-
     dinos.clear();
     assert(dinos.empty);
 }

source/tanya/container/set.d

@@ -424,11 +424,9 @@ if (is(typeof(hasher(T.init)) == size_t))
     @nogc nothrow pure @safe unittest
     {
         Set!int set;
-        assert(8 !in set);
-
         set.insert(8);
-        assert(8 in set);
 
+        assert(8 in set);
         assert(set.remove(8) == 1);
         assert(set.remove(8) == 0);
         assert(8 !in set);
@@ -443,9 +441,9 @@ if (is(typeof(hasher(T.init)) == size_t))
      * Returns: $(D_KEYWORD true) if the given element exists in the container,
      *          $(D_KEYWORD false) otherwise.
      */
-    bool opBinaryRight(string op : "in")(auto ref const T value) const
+    bool opBinaryRight(string op : "in")(auto ref inout(T) value) inout
     {
-        return this.data.canFind(value);
+        return value in this.data;
     }
 
     ///
@@ -513,9 +511,6 @@ if (is(typeof(hasher(T.init)) == size_t))
         assert(!set[].empty);
         assert(set[].front == 8);
         assert(set[].back == 8);
-
-        set.remove(8);
-        assert(set[].empty);
     }
 }