#11900: Serious regression caused by #9138
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Reporter: SimonKing | Owner: tbd
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.3
Component: performance | Keywords: categories regression
Work_issues: fix doctests | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #9138 #11911
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Changes (by SimonKing):
* work_issues: fix doctests, fix libsingular pickling => fix doctests
Comment:
The broken coercion was relatively easy to fix. I am now returning to some
further tuning of the timings. For example, I found that during
initialisation of one multivariate polynomial ring, it is tested ten times
(!) whether `base_ring in Rings()` or `base_ring in Fields()`.
hat seems like a waste of time (should be done less often), and also it is
faster to do `base_ring.is_ring()` if `is_ring` is a parent method.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11900#comment:50>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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