[Python-ideas] Parametrized any() and all() ? (original) (raw)
Nick Coghlan ncoghlan at gmail.com
Fri Jan 18 13:52:58 CET 2013
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On Fri, Jan 18, 2013 at 10:30 PM, Tarek Ziadé <tarek at ziade.org> wrote:
On 1/16/13 7:47 PM, Antoine Pitrou wrote:
You know, discussing performance without posting benchmark numbers is generally pointless. Sure, yes, so I tried to implement it by adapting the current any() : http://tarek.pastebin.mozilla.org/2068630 but it is 20% slower in my benchmark. However, I have no idea if my implementation is the right way to do things.
Resuming an existing frame (i.e. using a generator expression) is almost always going to be faster than going through the argument passing machinery and initialising a new frame. Chaining C level iterators together (e.g. map, itertools) is even faster.
DSU is great for cases where you need it, but a transformation pipeline is otherwise likely to be faster (or at least not substantially slower).
Cheers, Nick.
-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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