[m-dev.] Foreign type compare and unification

[Fergus Henderson]

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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