[erlang-questions] lists:mapfind?

[Roger Lipscombe]

On 21 August 2017 at 08:38, Константин Поветкин <povetkin.k@REDACTED> wrote:
> In case of ‘Single’ and ‘First’ you can use erlang:hd() or [FirstOrSingle |
> _Tail].

I was referring to Single and First with predicates, which aren't
quite the same (though can be built with) hd or [H | _].

My point is that I don't see the need for lists:mapfind (or whatever).
Is it a performance thing?