[z3-five] five.intid: cool!

[Jim Fulton]

whit wrote:
...
> I haven't tried it yet ;) but yeah that's the general idea(should also 
> allow the z3 reference implementations to be adapted for zope2).   I'm 
> using it  with rdflib, but I believe the idea is the same.

I'll note in passing that reference systems don't need intids.
Integer ids are mainly an optimization for indexing structures
because integer ids can be stored and compared more efficiently
than key references. This is a trade-off, since key references
can be dereferenced more efficiently than integer ids.

Many reference systems can and should be implemented on key
references directly.

Jim

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