+++ /dev/null
-\r
-data List a = Nil | Cons a (List a)\r
-\r
-first :: List Integer -> Integer\r
-//first Nil = 0 :: Integer\r
-first (Cons x _) = x\r
-\r
-reverse :: List a -> List a\r
-reverse l = reverseAux Nil l \r
- where\r
- reverseAux accum Nil = accum\r
- reverseAux accum (Cons h t) = reverseAux (Cons h accum) t \r
-\r
-main :: Integer\r
-main = first (reverse l) \r
- where\r
- l = Cons (1 :: Integer) (Cons (2 :: Integer) (Cons (3 :: Integer) Nil))\r
---\r
-3
\ No newline at end of file