Hey, Mike,
Thanks for this...
On Sep 9, 2008, at 3:42 PM, Mike Hansen wrote:
> I'm not sure about the other stuff, but you should do "is None"
> instead of "== None" since your times are so low.
>
> sage: a = 2
> sage: timeit("a == None")
> 625 loops, best of 3: 420 µs per loop
> sage: timeit("a is None")
> 625 loops, best of 3: 143 ns per loop
Before:
sage: %timeit q.D1()
1000 loops, best of 3: 307 µs per loop
After:
sage: %timeit q.D1()
1000000 loops, best of 3: 647 ns per loop
That seems to have a positive effect. :-}
What's the difference between "==" and "is" (or, more to the point:
where is this discussed)?
Justin
--
Justin C. Walker, Curmudgeon at Large
Director
Institute for the Enhancement of the Director's Income
-----------
Nobody knows the trouble I've been
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