-\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
+
+data List a = Nil | Cons a (List a)
+
+build :: (forall l. l -> (a -> l -> l) -> l) -> List a
+build f = f Nil Cons
+
+main = build (\nil cons -> cons (1 :: Integer) (cons (2 :: Integer) nil))
+--