Re: [Haskell-cafe] datakind declaration
On Tue, Feb 23, 2010 at 1:08 AM, Paul Brauner paul.brau...@loria.fr wrote: Hello, I remember seeing something like typedata T = A | B somewhere, where A and B are type constructors, but I can't find it in the ghc doc. Have I been dreaming or is it some hidden feature ? Paul ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe This is similar to what you are thinking of: http://hackage.haskell.org/trac/ghc/wiki/KindSystem ...but it's not implemented (yet). ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] datakind declaration
It's not quite what you're asking for, but a very similar idea is the SHE preprocessor: http://personal.cis.strath.ac.uk/~conor/pub/she/ Dan On Mon, Feb 22, 2010 at 8:08 PM, Paul Brauner paul.brau...@loria.fr wrote: Hello, I remember seeing something like typedata T = A | B somewhere, where A and B are type constructors, but I can't find it in the ghc doc. Have I been dreaming or is it some hidden feature ? Paul ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
