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Showing content from https://mail.python.org/pipermail/python-dev/2007-May/073248.html below:

[Python-Dev] Py2.6 buildouts to the set API

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>> * New method (proposed by Shane Holloway):  s1.isdisjoint(s2).
>> Logically equivalent to "not s1.intersection(s2)" but has an
>> early-out if a common member is found.  

[MvL]
> I'd rather see iterator versions of the set operations. 

Interesting idea.  I'm not sure I see how to make it work.
If s|t returned an iterator, then how would s|t|u work?
Are you proposing lazy evaluation of unions, intersections,
and differences?


Raymond

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