New subject: universal set object for use in set manipulation

25 Jul 2009

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"Nick" == Nick Coghlan  writes:
Nick> Greg Ewing wrote:
Andy Kish wrote:
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It's really annoying to having appropriate identity element for
union built in while missing the *correct* identity element for
intersection.
What would
for x in set.universal():
...
do?
Nick> Raise an exception, just like a signalling NaN in decimal.

Agreed. The code I stuck on PyPI today raises InfiniteSetError on __len__
and __iter__.

Nick> An expanded set concept with support for complementary set
Nick> definitions is definitely something that should cook on PyPI for a
Nick> while though.

Just to repeat the URL: http://pypi.python.org/pypi/compset/0.1

It's had exactly zero downloads :-)

Terry

Re: [Python-ideas] universal set object for use in set manipulation

Terry Jones

Michael Foord

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