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Make std.algo.copy CTFE-able #5282

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Merged
dlang-bot merged 1 commit into from
Mar 16, 2017
Merged

Make std.algo.copy CTFE-able #5282

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10 changes: 9 additions & 1 deletion std/algorithm/mutation.d
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Original file line number Diff line number Diff line change
Expand Up @@ -375,7 +375,7 @@ if (areCopyCompatibleArrays!(SourceRange, TargetRange))
assert(tlen >= slen,
"Cannot copy a source range into a smaller target range.");

immutable overlaps = () @trusted {
immutable overlaps = __ctfe || () @trusted {
return source.ptr < target.ptr + tlen &&
target.ptr < source.ptr + slen; }();

Expand Down Expand Up @@ -486,6 +486,14 @@ $(HTTP sgi.com/tech/stl/copy_backward.html, STL's copy_backward'):
assert(dest == [0, 0, 1, 2, 4]);
}

// Test CTFE copy.
@safe unittest
{
enum c = copy([1,2,3], [4,5,6,7]);
assert(c == [7]);
}


@safe unittest
{
import std.algorithm.iteration : filter;
Expand Down