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replace() and replaceFirst() don't return a copy of the array if nothing changed.

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This behavior is reasonable and explicitly tested for in the unit tests, but previously, one could think that they always returned a copy from the docs.
This commit is contained in:
David Nadlinger 2011-08-02 17:56:25 +02:00
parent cd5d266e04
commit 2d472caa80
1 changed files with 4 additions and 2 deletions
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6
std/array.d
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@ -1434,7 +1434,8 @@ unittest
/++
Replace occurrences of $(D from) with $(D to) in $(D subject). Returns a new
array without changing the contents of $(D subject).
array without changing the contents of $(D subject), or the original array
if no match is found.
+/
E[] replace(E, R1, R2)(E[] subject, R1 from, R2 to)
if (isDynamicArray!(E[]) && isForwardRange!R1 && isForwardRange!R2
@ -1745,7 +1746,8 @@ if (isDynamicArray!Range && is(ElementType!Range : T))
/++
Replaces the first occurrence of $(D from) with $(D to) in $(D a). Returns a
new array without changing the contents of $(D subject).
new array without changing the contents of $(D subject), or the original
array if no match is found.
+/
E[] replaceFirst(E, R1, R2)(E[] subject, R1 from, R2 to)
if (isDynamicArray!(E[]) && isForwardRange!R1 && isInputRange!R2)