25 Oct 2009 25 Oct '09
Adam Olsen wrote:
On Fri, Oct 23, 2009 at 11:04, Vitor Bosshard email@example.com wrote:
I see this as being useful for frozensets as well, where you can't get an arbitrary element easily due to the obvious lack of .pop(). I ran into this recently, when I had a frozenset that I knew had 1 element (it was the difference between 2 other sets), but couldn't get to that element easily (get the pun?)
item, = set_of_one
Interesting. It depends a bit on the speed of tuple unpacking, but presumably that is quite fast. On my system it is pretty darn good:
0.101us "for x in s: break" 0.112us "x, = s" 0.122us "for x in s: pass"
So not quite as good as the for loop, but quite close.