[Issue 17634] variadic overload of std.algorithm.searching.countUntil should return which needle was found

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17634

b2.temp at gmx.com changed:

           What    |Removed                     |Added
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                 CC|                            |b2.temp at gmx.com

--- Comment #1 from b2.temp at gmx.com ---
"dropExactly(c).startWith(...)" would allow to find the needle

also we can imagine a struct-based return type that doesn't break the current
code:

struct countUntilResult()
{
ptrdiff_t pos; size_t index;
}

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