Background I have a structure where the new function requires a parameter to be part of a closed set of values (think of it as an enum). So what I am doing is that I am basically duplicating them in the following way: defmodule Car do @type brands :: :opel | :mercedez …

[image] Dynamically generate typespecs from module attribute list Questions / Help For posterity: defmodule Test do @keys ~w(a b c)a @type key :: unquote(Enum.reduce(@keys, &{:|, [], [&1, &2]})) end

LostKobrakai March 12, 2024, 3:23pm 2

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How to remove duplication from typespec and static list of values?