#14585: Make lazy_format and lazy_string faster
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Reporter: SimonKing | Owner: robertwb
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: coercion | Resolution:
Keywords: | Merged in:
Authors: Simon King | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/SimonKing/Make_lazy_format_faster| af6750bdb2ff7d8a6b234cf3f021e2f603030be6
Dependencies: | Stopgaps:
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Comment (by SimonKing):
Next, I wish to address the slowness of `LazyFormat`. We have
{{{
sage: from sage.misc.lazy_format import LazyFormat
sage: form = LazyFormat("<%s>")
sage: cform = LazyFormat(""+form)
sage: cform
unbound LazyFormat("<%s>")
sage: %timeit copy(form)
The slowest run took 9.12 times longer than the fastest. This could mean
that an intermediate result is being cached
100000 loops, best of 3: 16.3 µs per loop
sage: %timeit LazyFormat(""+form)
The slowest run took 12.69 times longer than the fastest. This could mean
that an intermediate result is being cached
1000000 loops, best of 3: 395 ns per loop
}}}
So, this is what we could use in `__mod__` for speed-up
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Ticket URL: <http://trac.sagemath.org/ticket/14585#comment:46>
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