Is it possible to programmatically pattern match?
Pattern = {error, '_'},
IsError =
case {error, "foo"} of
Pattern -> true;
_ -> false
end.
I know I can do this with macros, but I have a dynamic list of patterns I would like to match that aren't known ahead of time.
Perhaps the closest you can get is using a compiled match specification, by calling the functions ets:match_spec_compile and ets:match_spec_run:
MS = ets:match_spec_compile([{{error, '_'}, [], ['$_']}]).
Items = [ok, {error, foo}, {error, bar}].
ets:match_spec_run(Items, MS).
This returns the two items in the Items list that match:
[{error,foo},{error,bar}]