[Haskell-cafe] Re: Implementing fixed-sized vectors (using datatype algebra?)

[Wolfgang Jeltsch]

Am Samstag, 9. Februar 2008 23:46 schrieben Sie:
> On Feb 9, 2008 4:08 PM, Wolfgang Jeltsch <g9ks157k at acme.softbase.org> wrote:
> > So what would (D1 :* D1) :* (D2 :* D2) mean then?
>
> Nothing. That value doesn't satisfy the Nat or Post class constraints
> and should be taken into consideration.
>
> Why should :* be provided a meaning? it is an unavoidable syntactical
> connective for all that I care. The meaning is provided by class
> constraints and that's all that matter from the semantical point of
> view.

I was just refering to Stefan’s argument that :* should be treated as a form 
of concatenation.  From your point of view, it’s clear, of course.

Best wishes,
Wolfgang