Just van Rossum <just@letterror.com> writes:
> Just van Rossum wrote:
>
> > class Outer:
> > [snip snip]
> > def __iter__(self):
> > while not self.isAtEnd():
> > result = self.outer.currentState()
> > self.outer.advanceState()
> > yield result
>
> PS, getting more off-topic, I'm somewhat surprised that the above is more
> compact and readable than the obvious generator-less equivalent:
>
> class Outer:
> [snip snip]
> def __iter__(self):
> return self
> def next(self):
> if self.isAtEnd():
> raise StopIteration
> else:
> result = self.outer.currentState()
> self.outer.advanceState()
> return result
Hey, wait a sec!
It doesn't surprise me at all that the above is more compact. I don't
see any next() interface, nor any raising of StopIteration. Does it
really satisfy the iterator protocol?
--
David Abrahams
dave@boost-consulting.com * http://www.boost-consulting.com
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