[Haskell-beginners] Problem combining monads <sigh!>

[Brent Yorgey]

On Tue, Apr 08, 2014 at 12:54:17PM +0700, Kim-Ee Yeoh wrote:
> 
> Answer: []. Yes, [] is a functor, the way Maybe and IO are functors. So f =
> []. It's unusual but only syntatically in the sense that Haskell says to
> write Maybe Int but rejects [] Int. You have to write [Int] to mean [] Int.

This is not true. In fact, [] Int is perfectly valid Haskell syntax;
it's just not very common.

-Brent