#12029: Fast conversion of ClonableIntArray to list
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Reporter: SimonKing | Owner: sage-combinat
Type: enhancement | Status: new
Priority: major | Milestone: sage-4.8
Component: combinatorics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies:
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Comment(by hivert):
Hi Simon,
A few remarks:
- The {{{.list()}}} method is not a Python convention, it is a Sage-
Combinat (and maybe Sage) convention. Isn't it ?
- Since the new Cython allows it. Did you try to define an iterator (using
yield) without relying on the list ? It could be faster.
- Also I'm not sure using append to build the list is a good idea (due to
possible reallocation). Si you know the list length from the beginning,
why not allocation the list and filling it with a loop ? I'm not sure if
it is doable optimally in Cython without using the C-API function
{{{PyList_New}}} and the macro {{{PyList_SETITEM}}}.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12029#comment:1>
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