#10963: More functorial constructions
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Reporter: nthiery | Owner: stumpc5
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-5.13
Component: categories | Resolution:
Keywords: days54 | Merged in:
Authors: Nicolas M. Thiéry | Reviewers: Simon King, Frédéric
Report Upstream: N/A | Chapoton
Branch: | Work issues:
public/ticket/10963 | Commit:
Dependencies: #11224, #8327, | 362fd5e462adea5860d52fd99db94a2623044d89
#10193, #12895, #14516, #14722, | Stopgaps:
#13589, #14471, #15069, #15094, |
#11688, #13394 |
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Comment (by vbraun):
How about we just create our own trashcan for weakref callbacks?
{{{
cdef bool trashcan_closed = True
cdef object trashcan = []
def remove(wr):
if trashcan_closed:
trashcan_closed = False
trashcan = [] # empty trash, possible call to remove()
trashcan_closed = False
trashcan.append(wr.subobject)
trashcan_close = True
}}}
Limits Python and C recursion depth to 2 frames...
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Ticket URL: <http://trac.sagemath.org/ticket/10963#comment:169>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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