[Issue 18121] Needleless findSplit* methods

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18121

--- Comment #1 from hsteoh at quickfur.ath.cx ---
Found a similar need for needleless overloads of findSplit* today too. The
context is that I'm trying to tokenize a string, and if it starts with a digit,
say "1234abcd" I'd like to be able to split it into "1234" and "abcd".  So
ideally:

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auto input = "1234abcd";
auto r = input.findSplitBefore!(ch => !isDigit(ch));
assert(r[0] == "1234" && r[1] == "abcd");
------

The current overloads do not allow this, though.

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