From 373a192b3ac1e9eb29feec43d8076d9d09712fbb Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Mon, 22 Oct 2018 08:39:38 +0200
Subject: [PATCH] Make hasLvalueElements work with non-copyable

---
 source/tanya/range/primitive.d | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/source/tanya/range/primitive.d b/source/tanya/range/primitive.d
index 7495d65..5dc9efc 100644
--- a/source/tanya/range/primitive.d
+++ b/source/tanya/range/primitive.d
@@ -1828,7 +1828,7 @@ template hasMobileElements(R)
  */
 template hasLvalueElements(R)
 {
-    private alias refDg = (ref ElementType!R e) => e;
+    private alias refDg = (ref ElementType!R e) => &e;
 
     static if (isRandomAccessRange!R)
     {
@@ -1886,6 +1886,16 @@ template hasLvalueElements(R)
     static assert(hasLvalueElements!R2);
 }
 
+// Works with non-copyable elements
+@nogc nothrow pure @safe unittest
+{
+    static struct NonCopyable
+    {
+        @disable this(this);
+    }
+    static assert(hasLvalueElements!(NonCopyable[]));
+}
+
 /**
  * Determines whether the elements of $(D_PARAM R) are assignable.
  *