George Sakkis wrote:
On Wed, Aug 27, 2008 at 12:51 PM, Tarek Ziadé <ziade.tarek@gmail.com <mailto:ziade.tarek@gmail.com>> wrote: The pattern can be generically resumed like this : [transform(e) for e in seq if some_test(transform(e))] So what about using the 'as' keyword to extend lists comprehensions, and to avoid calling transform() twice ?
Could be: [transform(e) as transformed for e in seq if some_test(transformed)]
-1; not general enough to justify the extra overhead (both in human mental effort and compiler changes), given that the current alternatives (esp. genexps) are already quite readable and more flexible.
-1; It's not clear to me that transform(e) is what's going into the list. And what if I want to test on two different values (or two different transforms on the same value), which one is put into the comprehension? Later, Blake.