[Python-Dev] Retrieve an arbitrary element from a set without removing it (original) (raw)
Willi Richert w.richert at gmx.net
Sat Oct 24 16:29:32 CEST 2009
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Hi,
I agree. But, here are the pros/cons collected from the recent list repsonses:
Pro:
- more readable
- newbies will encounter one of the fastest solution (.get()) before trying slower "first solutions" like (iter(set).next())
Cons:
- no name consensus. get() getany() arbitrary() ?
- BDFL moratorium, which I find very wise (get() is, however, no language extension, but std lib extension, which Guido did not moratorize, didn't he?)
- other classes should then also be extended, like frozenset
Regards, wr
PS: what is the correct verb form of moratorium?
Am Samstag, 24. Oktober 2009 00:49:38 schrieb Steven D'Aprano:
On Sat, 24 Oct 2009 07:53:24 am Willi Richert wrote: > Hi, > > surprised about the performance of for/break provided by Vitor, I did > some more testing. It revealed that indeed we can forget the get() > (which was implemented as a stripped down pop()):
I don't understand that conclusion. According to your tests, your implementation of get() is as fast as "for x in set: break", and it's certainly much, much more readable and straightforward.
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