On 25 maj 2013, at 16:08, PJ Eby <p...@telecommunity.com> wrote: > ISTM there should be some way to get at the raw > registration info, perhaps by exposing a dictproxy for the registry.
Is that really useful? Just today Antoine asked about changing behaviour of __subclasses__(), suspecting it isn't used in real world code anyway. What you're proposing is the functional equivalent of __subclasses__(). If you need direct access to the registry, do you think the ability to specify your own registry container isn't enough? > The way to detect ABC registrations is via the > ABCMeta._abc_invalidation_counter attribute: if its value is different > than the previous value saved with the cache, the cache must be > cleared, and the new value stored. Wow, I was looking at it just today morning and somehow missed how it can be used. Great idea, I'll play around with it later today. > (Unfortunately, this is a private attribute at the moment; it might be > a good idea to make it public, however, because it's needed for any > sort of type dispatching mechanism, not just this one particular > generic function implementation.) I think we can safely use it within the standard library, anyway. As for making it public, it's an idea for a separate discussion. > This would basically eliminate doing any extra (Python) function calls > in the common case, and might actually be faster than my current > simplegeneric implementation on PyPI (which doesn't even do ABCs at > the moment). Yes, that sounds neat. Thanks for feedback! -- Best regards, Łukasz Langa WWW: http://lukasz.langa.pl/ Twitter: @llanga IRC: ambv on #python-dev _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
