-import "JavaBuiltin" as Java\r
-\r
-class Functor f where\r
- map :: (a -> b) -> f a -> f b\r
- \r
-data Foo a = Foo a\r
-\r
-instance Functor Foo where\r
- map f (Foo x) = Foo (f x)\r
- \r
-instance Functor Maybe where\r
- map f Nothing = Nothing\r
- map f (Just x) = Just (f x)\r
- \r
-data List a = Nil | Cons a (List a)\r
-\r
-instance Functor List where\r
- map f Nil = Nil\r
- map f (Cons h t) = Cons (f h) (map f t)\r
- \r
-main = map (map (Java.iadd 1)) (Cons Nothing (Cons (Just (1 :: Integer)) Nil))\r
---\r
+import "JavaBuiltin" as Java
+
+class Functor f where
+ map :: (a -> b) -> f a -> f b
+
+data Foo a = Foo a
+
+instance Functor Foo where
+ map f (Foo x) = Foo (f x)
+
+instance Functor Maybe where
+ map f Nothing = Nothing
+ map f (Just x) = Just (f x)
+
+data List a = Nil | Cons a (List a)
+
+instance Functor List where
+ map f Nil = Nil
+ map f (Cons h t) = Cons (f h) (map f t)
+
+main = map (map (Java.iadd 1)) (Cons Nothing (Cons (Just (1 :: Integer)) Nil))
+--
(Cons null (Cons 2 Nil))
\ No newline at end of file