pufuwozu/roy — Issue #52: Can't write map function
Author: eegg
Created: 2011-12-04 23:57:54+00:00
State: open

Given

```haskell
data List a = Empty | Cons a (List a)

let map f l = match l
case (Cons x xs) = Cons (f x) (map f xs)
case Empty = Empty
```

I get the error

Error: Type error: Native is not List 'jqq