Proposed new collection methods
jeffrey.schwab at rcn.com
Sun Aug 7 06:50:09 CEST 2005
Robert Kern wrote:
> (s for s in iter(self) is test(s)) is a generator expression. It is
> roughly equivalent to
> def g(self, test=lambda x: True):
> for s in iter(self):
> if test(s):
> yield s
> Now, if I were to do
> item = g(self, test).next()
> the generator would execute the code until it reached the yield
> statement which happens when it finds the first item that passes the
> test. That item will get returned, and execution does not return to the
> generator again.
> That implementation does indeed return as soon as it locates the first
> item, so yes, I was being retarded.
Wow, that's cool! Very reminiscent of C++ input iterators, but a lot
cleaner and shorter. Thanks.
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