More type design questions

Konrad Hinsen
Mon, 18 Aug 2003 21:47:47 +0200

On Monday 18 August 2003 19:26, Brandon Michael Moore wrote:
> I think what you want are functional dependencies.

Bingo! That's what I needed. I had tried something like that before, but =
I had=20
started from a fundamental misunderstanding: I had assumed that

    class Vect v a where...

would automatically make 'v' a type constructor, and all my experiments u=
that assumption plus dependencies produced rather useless results.

What I have now satisfies all my needs (at least my current needs...), an=
d it=20
works with GHC. Hugs hangs in some places, but I guess that's another pro=

> The GHC users guide, the Haskell Wiki, and the paper "Type Classes:
> Exploring the Design Space" are all good places for more information.

Thanks, I'll look at all that...