Re: refcounting hash

Nicholas Clark wrote:

> I'd like to be able to provide this as a non-singleton PMC class, with the
> addition of a value lookup, and (possibly) iteration. But cut and paste is
> evil. 

Well, the more general question is: how can we parameterize our 
aggregates. We already have tons of arrays with (bit, double, int, PMC*, 
STRING*) values.

For hashes it could get worse:

   key       /    value
   STRING*   /    PMC*          Hash
   PMC *     /    PMC *         Python  / Perl6
   &PMC      /    INTVAL        ref hash
     x             y            Perl6

The hash functions in src/hash.c can handle this (probably), with 
key/value type and with user defined compare/hash functions already 
inside..

We need an interface above that constructs appropriate vtable pieces for 
key and value access from the PMC side.

> Nicholas Clark

For now c&p helps :-)
leo