#12955: Move __len__ and __getitem__ from Parent to FiniteEnumeratedSets
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Reporter: nthiery | Owner: nthiery
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.1
Component: categories | Resolution:
Keywords: days38 | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Nicolas M. Thiéry | Merged in:
Dependencies: #12957 | Stopgaps:
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Changes (by nthiery):
* dependencies: => #12957
Old description:
> Title says it all. The point is that with the current implementation in
> Parent, it is impossible to override those methods with something more
> interesting from lower categories. This long awaited change should be
> possible now that all(?) finite enumerated sets in Sage should be in
> FiniteEnumeratedSets.
New description:
Title says it all. The point is that with the current implementation
prevents categories to override those methods with something more
interesting. Alas, the attached patch is not yet ready for
consumption since there still remains finite (enumerated) sets in Sage
that are not in FiniteSets of FiniteEnumeratedSets (#)
In the mean time, #12956 provides a workaround for __getitem__.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12955#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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