[Haskell-beginners] basic Functor, Applicative and Monad instances

[amindfv at gmail.com]

Right, you'll want to say eg

fmap :: (a -> b) -> Val a -> Val b

Tom


El Jul 17, 2015, a las 12:23, Imants Cekusins <imantc at gmail.com> escribió:

>> InstanceSigs
> 
> Thank you Tom.
> 
> this sig does not work though:
> fmap ::(a -> b) -> f a -> f b