[erlang-questions] Guards syntax for multiple values

Jesper Louis Andersen jesper.louis.andersen@REDACTED
Mon Mar 25 19:02:58 CET 2019

On Mon, Mar 25, 2019 at 6:03 PM Florent Gallaire <fgallaire@REDACTED>

> For reasons of taste, I prefer Erlang over Elixir, and my "in list"
> operator need comes obviously from my important Python experience.
Thinking out loud, I think it might be beneficial to look at two additions:

lists:member - because length(..) is in the set of Valid GuardSeqs and is

The latter map variants are arguably even stronger since they have good
lookup time, even for very large maps. Writing maps:is_key(X, #{ a => true,
b => true }) should be fast and since it is a literal, it can be optimized
in a number of ways by the compiler.
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