is_list_elem_is_42(List) ->
    F = fun(Element, AccIn) ->
        case Element of
            42 -> lists:append(AccIn, [true]);
            _ -> lists:append(AccIn, [false])
        end
    end,
    lists:foldl(F,[],List).
    %[1, q, "Hello", 'World', 42, {1,488}]
    %[false, false, false, false, true, false]