1. 2012-08-30 Re: [Haskell-beginners] complex typeclass/constraint haskell-b Dennis Raddle 2. 2012-08-29 Re: [Haskell-beginners] complex typeclass/constraint haskell-b Brent Yorgey 3. 2012-08-29 [Haskell-beginners] complex typeclass/constraint ques haskell-b Dennis Raddle