This is a very nice tip, it makes you understand the function and adding a doc to the function even make it better to understand what that function is doing, if you want to use multiple clause function, so you can understand what each function with its own clause is handling
Thank you
bennydreamtech23
1
mudasobwa
Creator of Cure
My fave is __CALLER__ struct has a context key which might be used to distingush context of macro invocation (might be :guard when invoked in guards, :match when invoked in matches, or nil otherwise.) Here is the self-explanatory example from Kernel.or/2 macro
defmacro left or right do
case __CALLER__.context do
nil -> build_boolean_check(:or, left, true, right)
:match -> invalid_match!(:or)
:guard -> quote(do: :erlang.orelse(unquote(left), unquote(right)))
end
end
It helped me to build the MapSet matchers fwiw.
2