On Tue, Nov 24, 2009 at 6:02 PM, Simon Peyton-Jones <simo...@microsoft.com> wrote: > It used to be, because GHC used to implement so-called "deep skolemisation". > See Section 4.6.2 of > http://research.microsoft.com/en-us/um/people/simonpj/papers/higher-rank/putting.pdf > > Deep skolemisation was an unfortunate casualty of the push to add > impredicative polymoprhism. However, as I mentioned in an earlier email, I'm > currently planning to take impredicative polymorphism *out*, which means that > deep skolemisation might come back *in*.
Ok nice because I'm very used to refactor code like: 'f x = g x' to 'f = g' for all f and g. Thanks, Bas _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
