Re: Help With GHC Extension

2010-03-19 Thread Matt Brown
Thanks for the advice, Simon. Wiki sounds like a good start. In the meantime, my patches are available at ftp://ftp.softmechanics.net, in case anyone wants a look. I'll try to keep them in sync with head. Those interested can peruse the following examples (my test cases for development -- all co

RE: Help With GHC Extension

2010-03-19 Thread Simon Peyton-Jones
Matt I have not thought about this for a while. Read the stuff in the user manual about overlapping instances http://www.haskell.org/ghc/docs/latest/html/users_guide/type-class-extensions.html#instance-overlap, esp the bit about "GHC is conservative about committing..". Also "Note [Overlappi