#14159: Don't install callbacks on values of TripleDict, MonoDict
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Reporter: nbruin | Owner: tbd
Type: PLEASE CHANGE | Status: new
Priority: major | Milestone: sage-5.8
Component: PLEASE CHANGE | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by SimonKing):
Replying to [comment:4 nbruin]:
> Replying to [comment:3 SimonKing]:
> > So, what about the first option? It would make sure that an entry will
only be deleted if the value is identical with the object whose callback
is being called.
> Yes, sorry for not being clear about it. That's what the second part of
the reply expands on.
Sorry, I don't see the relation with suggestion 1.
> So probably there needs to be an additional option on ...DictEraser
objects to check that the value
> is as expected
Why? The callback would be checking that the value is identical with the
object pointed to by the weak reference. This should be cheap enough to be
done by default.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14159#comment:5>
Sage <http://www.sagemath.org>
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