Re[4]: [Haskell-cafe] Class

Hello Slavomir, Thursday, November 2, 2006, 5:51:17 PM, you wrote:

I wouldn't like to manually define instances of Visible for all types that have Show instances.

believe it or not but i had the same problems

I think I need something like that:

class Visible a where instance Show a => Visible a where

Which still doesn't work. Any ideas?

this will work. with addition of instance Visible a => Visible [a] where this will not work. it's a mission impossible -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com