[Issue 4705] std.algorithm.max/min with key function, for a single range, + mins/maxs functions

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=4705

--- Comment #20 from Andrei Alexandrescu <andrei at erdani.com> ---
@bearophile why didn't you just implement this as a PR? It's trivial.

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