[Zope-dev] make zope.component.registry.Components inherit from dict?

Chris McDonough chrism at plope.com
Tue Nov 24 00:42:28 EST 2009

Chris McDonough wrote:
>> Off the top of my head, another way to think of this *might* be to say 
>> that the 'dict access' is basically looking up a *named* utility 
>> providing a very generic marker interface, e.g. 
>> zope.component.interfaces.IUtility or even just 
>> zope.interface.Interface. That way reg['foo'] == getUtility(IUtility, 
>> name='foo'). Obviously, assignment would register in the same way.
>> I'm not sure it's "better", though. :)
> That would also be fine, and it would normalize things a bit, although the 
> implementation would be harder and it would result in slower lookups.  But if 
> it made folks feel better than inheriting from dict, I'd be +1 on it.

Meh, I just remembered that I tried this.  The current implementation requires 
that the "name" value be a literal string object (or at least something 
convertable to Unicode).  I think we could relax this requirement; it really 
only needs to be hashable.  I wouldn't want to deploy the API if the keys were 
required to only be strings.

- C

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