Re: [Haskell-beginners] Maybe monad and computations

I can't see how even your GHC version of 'operation' should work ...

Ok, the GHC version puts the IO action into the Maybe and returns it then from 'process'. There's really no need for this extra wrapping of the string into the IO monad. I know nothing about Fay, so I don't know why this extra wrapping shouldn't work for Fay. Fay has an instance for Monad, right? Greetings, Daniel