[Python-ideas] Variations on a loop
arnodel at googlemail.com
Sat Aug 30 21:37:34 CEST 2008
On 30 Aug 2008, at 19:59, Arnaud Delobelle wrote:
> On 30 Aug 2008, at 19:32, Bruce Leban wrote:
>> On Sat, Aug 30, 2008 at 10:56 AM, Arnaud Delobelle <arnodel at googlemail.com
>> > wrote:
>> Finally, my function works gracefully with nested loops:
>> for i, i_last in flaglast(items):
>> for j, j_last in flaglast(jtems):
>> without the need for a 'named loop', about which I feel very
>> Unfortunately, your function has to get the N+1st item before the
>> body processes the Nth element so if getting the elements has side
>> effects and the body might break, then this changes the behavior of
>> the loop. With an explicit call to an <is this the last> function,
>> we know exactly when it will peek ahead in the list.
>> --- Bruce
> How do you propose to find out if the item is the last without
> getting the next one?
Sorry I hadn't read your reply closely enough. I agree, but I was
only reproducing the functionality of some code in the thread without
the need for new syntax.
More information about the Python-ideas