#18246: remove naive __hash__ from SageObject
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Reporter: | Owner:
vdelecroix | Status: needs_review
Type: | Milestone: sage-6.9
defect | Resolution:
Priority: major | Merged in:
Component: | Reviewers: Volker Braun
coercion | Work issues:
Keywords: | Commit:
Authors: | 813231b402621c063793062fda218452895bf769
Vincent Delecroix | Stopgaps:
Report Upstream: N/A |
Branch: |
public/18246 |
Dependencies: |
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Description changed by vdelecroix:
Old description:
> Hashing is a critical function in Python. In several places, objects do
> use the generic `__hash__` from `SageObject` or a badly implemented one
> that makes everything slow. For example:
> - #18215 for quadratic number field elements (in relation with polyhedra
> #18241)
> - #18239 for permutation group elements
New description:
Hashing is a critical function in Python. In several places, objects do
use the generic `__hash__` from `SageObject` or a badly implemented one
that makes everything slow. For example:
- #18215 for quadratic number field elements (in relation with polyhedra
#18241)
- #18239 for permutation group elements
See also #19016 for a ticket with the same purpose (with `Element` instead
of `SageObject`).
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Ticket URL: <http://trac.sagemath.org/ticket/18246#comment:24>
Sage <http://www.sagemath.org>
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and MATLAB
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