[Reality] Containment - barriers to implementation

[Glyph Lefkowitz]

On Apr 4, 2004, at 1:33 AM, <exarkun at divmod.com> wrote:

> As an alternative to adding a second criterion, it also seems possible 
> to change the current criterion to an introspectable object ... which 
> would provide enough information to filter both collectors/more and 
> implements/find in semantically different ways.  This preserves the 
> existing interfaces, more or less, and forces us to fix criterion 
> sooner rather than later, so maybe is a better solution.

IMHO this is the correct solution, because I have a feeling we will 
want the criterion to do more sophisticated things as time goes on, and 
I don't want to go from 2 to 3 to 4 kinds of criterion in doing so.

A good example of "more stuff" might be a 'refine' method on criterion 
to aggregate them, whereby one might (somehow) indicate that one is 
requesting an object *both* whose name is "sword" *and* whose owner is 
me.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: PGP.sig
Type: application/pgp-signature
Size: 186 bytes
Desc: This is a digitally signed message part
Url : http://pyramid.twistedmatrix.com/pipermail/reality/attachments/20040404/f33fb119/PGP.bin