RE: [Haskell-cafe] Re: MPTCs and rigid variables

2007-03-07 Thread Simon Peyton-Jones
| ATs are not in any of the official GHC releases... Are they in the CVS head? The HEAD has fully-implemented associated *data types*, but not associated *type synonyms*. We're working on the latter, quite hard. As Claus says, the place to look is here http://hackage.haskell.or

Re: [Haskell-cafe] Re: MPTCs and rigid variables

2007-03-07 Thread Claus Reinke
ATs are not in any of the official GHC releases... Are they in the CVS head? darcs, these days;-) but yes, from 6.7. see: announcement http://article.gmane.org/gmane.comp.lang.haskell.general/14447 main? info page http://haskell.org/haskellwiki/GHC/Indexed_types ghc status, with new features

Re: [Haskell-cafe] Re: MPTCs and rigid variables

2007-03-07 Thread Iavor Diatchki
Hello, On 3/7/07, Claus Reinke <[EMAIL PROTECTED]> wrote: AT: associated types, as in GHC ATs are not in any of the official GHC releases... Are they in the CVS head? -Iavor ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haske

Re: [Haskell-cafe] Re: MPTCs and rigid variables

2007-03-07 Thread Claus Reinke
hi mm (?-), F, FD, FC, AT, SPJ ;) WTH does it mean? sorry about this acronymitis :) there was a lengthy debate about some of these things in the context of haskell' a year or so ago, and i just fell back into the mood, forgetting to explain my acronyms before using them again F: System F

Re: [Haskell-cafe] Re: MPTCs and rigid variables

2007-03-07 Thread mm
F, FD, FC, AT, SPJ ;) WTH does it mean? On Wed, Mar 07, 2007 at 10:12:11AM +0100, [EMAIL PROTECTED] wrote: > Claus Reinke wrote: > >>> ps. i was somewhat shocked to read that SPJ wants FDs gone. > >> > >> Why? Simon has good taste. :) > > > > de gustibus non est disputandum ;) > > > > FD have u

Re: [Haskell-cafe] RE: MPTCs and rigid variables

2007-03-03 Thread David House
On 03/03/07, C Rodrigues <[EMAIL PROTECTED]> wrote: class Foo a b | a -> b where foo :: a -> FooBox b data FooBox b = forall c. Foo b c => FooBox (Maybe c) Existential boxes is indeed the method I've used to tackle this in practice. However, it's kind of annoying, hence my email asking whether