oren-py-l at hishome.net
Tue Jan 29 11:50:38 CET 2002
On Mon, Jan 28, 2002 at 09:29:46PM -0500, Raymond Hettinger wrote:
> Wild idea of the day: Extend the syntax for list comprehensions
> to have an optional 'yield' to create a generator rather than a list.
> sizegen = [ yield (len(line),line) for line in file.readline() ]
I like it. Reusing the yield keyword is a very elegant solution.
One problem with this syntax is that there is no justification for the use
of square brackets - the result isn't a list. It looks like it can work
just fine without them. The keyword yield can work similarly to the
lambda keyword. It would have a priority just between lambda and boolean
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