#4041: cache backends should implement __contains__ so that the in operator may
be
used
---------------------------------------------------+------------------------
Reporter: Gary Wilson <[EMAIL PROTECTED]> | Owner: jacob
Status: new | Component:
Cache system
Version: SVN | Resolution:
Keywords: | Stage:
Ready for checkin
Has_patch: 1 | Needs_docs: 0
Needs_tests: 0 | Needs_better_patch: 0
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Comment (by mtredinnick):
Replying to [comment:5 SmileyChris]:
> Unless I'm missing something, can't we just do this? (see patch)
Yes, it is possible to make {{{__contains__}}} and {{{has_key}}} be
aliases for each other like this. In the early days, when
{{{__contains__}}} was first introduced into the language, it wasn't clear
if this was going to be a good identification, but nowadays, it's accepted
as correct; to the point that even Python core checkins are using this
idiom in places.
What that patch doesn't need is the comment: it's the equivalent of saying
"add one to i" in a comment. People know what {{{__contains__}}} does
already.
--
Ticket URL: <http://code.djangoproject.com/ticket/4041#comment:7>
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