Re: [Haskell-cafe] Why do I have to specify (Monad m) here again?

Hello Marc, Sunday, February 18, 2007, 5:21:36 PM, you wrote:

Why do I have to specify (Monad m) here again?

class (Monad m) =>> GetMV m a where

instance GetMV m c where

because you can find another way to ensure that m is monad. for example, instance (MonadIO m) => GetMV m c where if i not yet proposed you to read http://haskell.org/haskellwiki/OOP_vs_type_classes then now it is time to do it :) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com