#11255: Enhance the e_one_star.Patch class
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Reporter: tjolivet | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.7.1
Component: combinatorics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: Sébastien Labbé | Author: Timo Jolivet
Merged: | Dependencies:
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Comment(by tjolivet):
Replying to [comment:18 slabbe]:
> Why do we need copies in those cases?
Hi, if for some reason the user repaints the returned faces, we don't want
it to change the color of the faces in the original Patch.
Otherwise, are you sure about the {{{next(iter(P))}}} trick? The other
seems faster:
{{{
sage: a = frozenset(range(10000))
sage: timeit('list(a)[0]')
625 loops, best of 3: 107 µs per loop
sage: timeit('next(iter(a))')
625 loops, best of 3: 607 ns per loop
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11255#comment:20>
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