{-# htermination (notElemMyBool :: MyBool -> (List MyBool) -> MyBool) #-} import qualified Prelude data MyBool = MyTrue | MyFalse data List a = Cons a (List a) | Nil asAs :: MyBool -> MyBool -> MyBool; asAs MyFalse x = MyFalse; asAs MyTrue x = x; foldr :: (a -> b -> b) -> b -> (List a) -> b; foldr f z Nil = z; foldr f z (Cons x xs) = f x (foldr f z xs); and :: (List MyBool) -> MyBool; and = foldr asAs MyTrue; map :: (a -> b) -> (List a) -> (List b); map f Nil = Nil; map f (Cons x xs) = Cons (f x) (map f xs); pt :: (c -> b) -> (a -> c) -> a -> b; pt f g x = f (g x); all :: (a -> MyBool) -> (List a) -> MyBool; all p = pt and (map p); esEsMyBool :: MyBool -> MyBool -> MyBool esEsMyBool MyFalse MyFalse = MyTrue; esEsMyBool MyFalse MyTrue = MyFalse; esEsMyBool MyTrue MyFalse = MyFalse; esEsMyBool MyTrue MyTrue = MyTrue; not :: MyBool -> MyBool; not MyTrue = MyFalse; not MyFalse = MyTrue; fsEsMyBool :: MyBool -> MyBool -> MyBool fsEsMyBool x y = not (esEsMyBool x y); notElemMyBool :: MyBool -> (List MyBool) -> MyBool notElemMyBool = pt all fsEsMyBool;