#715: Parents probably not reclaimed due to too much caching
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Reporter: robertwb | Owner: somebody
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.8
Component: coercion | Keywords: weak cache coercion
Work_issues: Get some timings | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #9138, #11900
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Comment(by SimonKing):
Replying to [comment:114 SimonKing]:
> For example, since k1 is compared by identity (not equality), it might
make sense to store `id(bucket[i]())` as an attribute of the weak
reference. This is possible by `weakref.KeyedRef`. And `bucket[i].key` is
a bit faster than `bucket[i]()`.
... but `k1 is bucket[i]()` is a lot faster than `id(k1)==bucket[i].key`.
Too bad.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:115>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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