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Add Issue 9578 workaround to std.algorithm.all

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As a result `all` can now be used with nested predicates.

Issue URL: http://d.puremagic.com/issues/show_bug.cgi?id=9578
This commit is contained in:
Denis Shelomovskij 2013-02-27 17:56:56 +04:00
parent e2692d1d0f
commit b5ca2ef0c9
1 changed files with 6 additions and 1 deletions
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7
std/algorithm.d
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@ -9838,13 +9838,18 @@ assert(!all!"a & 1"([1, 2, 3, 5, 7, 9]));
bool all(alias pred, R)(R range) bool all(alias pred, R)(R range)
if (isInputRange!R && is(typeof(unaryFun!pred(range.front)))) if (isInputRange!R && is(typeof(unaryFun!pred(range.front))))
{ {
return find!(not!(unaryFun!pred))(range).empty; // dmd @@@BUG9578@@@ workaround
// return find!(not!(unaryFun!pred))(range).empty;
bool notPred(ElementType!R a) { return !unaryFun!pred(a); }
return find!notPred(range).empty;
} }
unittest unittest
{ {
assert(all!"a & 1"([1, 3, 5, 7, 9])); assert(all!"a & 1"([1, 3, 5, 7, 9]));
assert(!all!"a & 1"([1, 2, 3, 5, 7, 9])); assert(!all!"a & 1"([1, 2, 3, 5, 7, 9]));
int x = 1;
assert(all!(a => a > x)([2, 3]));
} }
// Deprecated. It will be removed in January 2013. Use std.range.SortedRange.canFind. // Deprecated. It will be removed in January 2013. Use std.range.SortedRange.canFind.