+++ /dev/null
-\r
-data List a = Nil | Cons a (List a)\r
-\r
-build :: (forall l. l -> (a -> l -> l) -> l) -> List a\r
-build f = f Nil Cons\r
-\r
-main = build (\nil cons -> cons (1 :: Integer) (cons (2 :: Integer) nil))\r
--- \r
-(Cons 1 (Cons 2 Nil))
\ No newline at end of file