or_or_or.erl

-module(or_or_or).

-compile(export_all).

f1(X) ->
    if
        length(X) =:= 1; size(X) =:= 1 ->
            okay;
        true ->
            nope
    end.

f2(X) ->
    if
        length(X) =:= 1 orelse size(X) =:= 1 ->
            okay;
        true ->
            nope
    end.

test() ->
    io:format("f1([x]) = ~p~n", [f1([x])]),
    io:format("f1({x}) = ~p~n", [f1({x})]),
    io:format("~n", []),
    io:format("f2([x]) = ~p~n", [f2([x])]),
    io:format("f2({x}) = ~p~n", [f2({x})]).