RandomSample should check if input is InputRange.

dlang · May 4, 2012 · 40a79b3 · 40a79b3
1 parent 56ef139
commit 40a79b3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/std/random.d b/std/random.d
@@ -1487,7 +1487,7 @@ a sample of size $(D n) in O(n) steps and requiring O(n) random
 variates, regardless of the size of the data being sampled.
 */
 struct RandomSample(R, Random = void)
-    if(isUniformRNG!Random || is(Random == void))
+    if(isInputRange!R && (isUniformRNG!Random || is(Random == void)))
 {
     private size_t _available, _toSelect;
     private immutable ushort _alphaInverse = 13; // Vitter's recommended value.