1. 2013-03-12 Re: [Haskell-cafe] newtype a Constraint? haskell-c Max Bolingbroke 2. 2013-03-12 Re: [Haskell-cafe] newtype a Constraint? haskell-c Roman Cheplyaka 3. 2013-03-12 Re: [Haskell-cafe] newtype a Constraint? haskell-c Gábor_Lehel 4. 2013-03-12 [Haskell-cafe] newtype a Constraint? haskell-c Roman Cheplyaka