#10496: The default call method of maps does not do as promised by the
documentation
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Reporter: SimonKing | Owner: robertwb
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.6.2
Component: coercion | Keywords: generic call map
Author: Simon King | Upstream: N/A
Reviewer: David Roe | Merged:
Work_issues: speed things up |
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Changes (by SimonKing):
* status: needs_review => needs_work
* work_issues: => speed things up
Comment:
I think there is yet another way to speed things slightly up.
If there is coercion then there is a coerce map. Hence, rather than
testing "self._domain.has_coerce_map_from(P)", one could directly request
"caller=self._domain.coerce_map_from(P)", and then do "caller(x)" if it is
not None. That should be faster than doing "self._domain(x)", because the
call method of "self._domain" would request a coerce map as well!
I'll test a bit later. So, it will be "needs work" for two hours or so.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10496#comment:5>
Sage <http://www.sagemath.org>
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