Re: [Haskell-cafe] Solved but strange error in type inference

On Wed, Jan 4, 2012 at 9:41 PM, Yves Parès wrote:

Would you try:

f :: a -> a f x = undefined :: a

And tell me if it works? IMO it doesn't.

It works. As I understand, in this situation we are specializing the 'undefined :: forall a. a' to a more specific dependent type.