https://issues.dlang.org/show_bug.cgi?id=17634
Issue ID: 17634
Summary: variadic overload of
std.algorithm.searching.countUntil should return which
needle was found
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P1
Component: phobos
Assignee: [email protected]
Reporter: [email protected]
Find does this already:
https://dlang.org/phobos/std_algorithm_searching.html#.find.4
> A tuple containing haystack positioned to match one of the needles and also
> the 1-based index of the matching element in needles (0 if none of needles
> matched, 1 if needles[0] matched, 2 if needles[1] matched...). The first
> needle to be found will be the one that matches. If multiple needles are
> found at the same spot in the range, then the shortest one is the one which
> matches (if multiple needles of the same length are found at the same spot
> (e.g "a" and 'a'), then the left-most of them in the argument list matches).
It would be convenient if countUntil would behave the same, but it's probably
too late to change the return type, so the only way left is adding an optional
`out` parameter.
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