[ZODB-Dev] BTrees and setdefault

[Tim Peters]

[Dmitry Vasiliev]
> Since then I've changed my mind and almost haven't used setdefault(). So
> now I'm only +0 on the idea. :-) I think pop() is even more useful than
> setdefault(), I've planned to use it for some persistent queue
> implementation (based on BTrees). So if setdefault() will be added I
> think it would be also useful to add the pop() method.

Since setdefault() is going into ZODB 3.5 (I'm going to merge Ruslan's
branch into the trunk today), if anyone <hint> would like to code up pop()
implementations too, I won't object.  Overall, I like pop() better than
setdefault() too.