#12290: Fix the hash of matrix spaces and improve its performance
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Reporter: SimonKing | Owner: jason, was
Type: defect | Status: positive_review
Priority: critical | Milestone: sage-5.0
Component: linear algebra | Keywords: hash matrix space unique parent
Work_issues: | Upstream: N/A
Reviewer: David Loeffler | Author: Simon King
Merged: | Dependencies: #11900
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Changes (by davidloeffler):
* status: needs_review => positive_review
* reviewer: => David Loeffler
Comment:
I see: the old copy method returned a copy whose base ring was None (!).
Anyway, this looks like good stuff, and patchbot seems happy with it on
two different v5.0 builds, so let's get it in.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12290#comment:9>
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