[m-dev.] Foreign type compare and unification

[Kevin Glynn]

GHC supports 'Generic Classes', see

http://www.haskell.org/ghc/docs/latest/set/generic-classes.html

I'm sure I read about a proposal to extend GHC's deriving mechanism,
probably this was it but I don't have time to follow up the refs.

Hope this is helpful (and don't bother complaining to me about any
deficiencies - I'm just the messanger!)

k



Fergus Henderson writes:
 > On 17-May-2002, Tyson Dowd <trd at cs.mu.OZ.AU> wrote:
 > > On 15-May-2002, Fergus Henderson <fjh at cs.mu.OZ.AU> wrote:
 > > > On 14-May-2002, Peter Ross <pro at missioncriticalit.com> wrote:
 > > > > IMHO the typeclass approach with the deriving annotation from Haskell seems
 > > > > the most elegant approach to me.
 > > > 
 > > > Haskell's "deriving" annotation has the drawback that the language
 > > > has a fixed list of classes for which you are allowed to write "deriving".
 > > > The mechanism is not extensible.
 > > 
 > > This is true.  But I'm not sure what your point is.  Why do you mention
 > > this?
 > 
 > My point is that the typeclass approach with the deriving annotation from
 > Haskell does *not* seem to be the most elegant approach to me.  Because the
 > list of such classes is fixed and not extensible, it seems rather inelegant.
 > 
 > -- 
 > Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
 > The University of Melbourne         |  of excellence is a lethal habit"
 > WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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