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-module(obvious_booleans).
-export([?MODULE/0]).
-compile([warnings_as_errors]).
?MODULE() ->
true = both_ok(ok, ok),
false = both_ok(ok, nok),
true = one_ok(ok, nok),
true = one_ok(nok, ok),
false = one_ok(nok, nok),
ok.
both_ok(A, B) ->
A =:= ok andalso B =:= ok.
one_ok(A, B) ->
A =:= ok orelse B =:= ok.
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