#13394: Write a WeakValueDictionary with safer key removal
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Reporter: nbruin | Owner: rlm
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.13
Component: memleak | Resolution:
Keywords: | Merged in:
Authors: Simon King | Reviewers:
Report Upstream: None of the above | Work issues:
- read trac for reasoning. | Commit:
Branch: | c3dba989f73c1eec0a66cf72ae203132fe33b5da
u/SimonKing/ticket/13394 | Stopgaps:
Dependencies: |
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Comment (by SimonKing):
I currently believe that `D.pop(k)` should return `D[k]` regardless
whether we are iterating or not. But ''if'' we are iterating, then
deletion of `D[k]` should be postponed. Also `D.popitem()` should return
an item and postpone deletion if we are iterating.
Note that `D[k]` should include a test whether the item is waiting to be
deleted, and in this case raise a key error. Similarly, the iteration
methods should only iterate over items that are not (yet) waiting to be
deleted.
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Ticket URL: <http://trac.sagemath.org/ticket/13394#comment:22>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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