Tim,
Besides the fact that from the standard we only have that
(equal x y) implies (= (sxhash x) (sxhash y)).
Do you see any reason why SXHASH is not used by default in SetCategory?
Note: OpenAxiom currently defines this default:
add
hash(s : %): SingleInteger == SXHASH(s)$Lisp
Regards,
Bill Page.
On Mon, Nov 9, 2009 at 7:51 PM, Tim Daly <d...@axiom-developer.org> wrote:
> ...
> There is a lisp function to get the hash value of any object
> call sxhash. You can call it.
>
> SXHASH(a)$Lisp
>
> Note that if
>
> c:=Integer
>
> then
> EQ(a,c)$Lisp is false
> SXHASH(a)$Lisp is not equal to SXHASH(c)$Lisp
>
> Thus the hash function you seek already exists.
> You just have to accept the fact that Spad is only syntactic
> sugar for lisp code and lisp is not evil.
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