#19290: MatroidUnion _rank accept any iterator, partition accept empty partition
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Reporter: chaoxu | Owner:
Type: defect | Status: needs_review
Priority: trivial | Milestone: sage-6.9
Component: matroid theory | Resolution:
Keywords: | Merged in:
Authors: Chao Xu | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/chaoxu/matroid_union | 4f501fbc5cdc0958d148bfe98b42a3a571a337e5
Dependencies: | Stopgaps:
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Changes (by Rudi):
* cc: Rudi (added)
* component: PLEASE CHANGE => matroid theory
Comment:
Hi Chao,
It is OK if underscored methods like ._rank are picky about the kind of
input they can handle. The idea behind having both .rank() and ._rank() is
that .rank() should be convenient to use (by checking the input, possibly
reformatting it), and ._rank() as efficient as possible (by assuming the
input is of the right form).
So unless there is no efficiency hit whatsoever, I don't like the idea of
adjusting ._rank to accept more varied input.
--
Ticket URL: <http://trac.sagemath.org/ticket/19290#comment:3>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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