how can this iterator be optimized?
ptmcg at austin.rr.com
Sat Feb 14 10:19:45 EST 2009
On Feb 11, 7:22 pm, Basilisk96 <basilis... at gmail.com> wrote:
> where "func" is a single-argument function that returns either a
> string or None, but is an expensive call.
> I am pretty sure that the sorted() construct cannot be improved much
> further, but...
> ...does anyone have ideas on improving the "rawPairs" iterator so that
> it calls "func(s)" only once per iteration? Perhaps a lambda
> construct, but I am not sure how to go about it...?
If func is expensive, you could try memoizing it. Then subsequent
"calls" just do arg lookups. Michele Simianato has posted a good
memoizing decorator on the Python wiki.
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