Em Qui, 2006-03-23 às 21:23 -0800, Adam DePrince escreveu:
> Wait! It occured to me. Why are we touching the key at all. This is
> a dictionary with mutable values.
This idea occured to me but I always forget about the [:] trick, so I
didn't try it :).
> Now, we *know* that all of the values are lists of length 2, so why not
> say this instead:
>
> python2.4 -mtimeit -s 'from numarray import array; d =
> {(100,500):[5,5], (100,501):[6,6],
> (100,502):[7,7]}; x = dict(d);j=[0,0]' 'for i in x.values():
> j[0]*=1;j[1]*=1'
> 1000000 loops, best of 3: 1.7 usec per loop
Why do you import numarray? o.O
Nice approach, though.
--
Felipe.
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