[Python-Dev] PEP 0424: A method for exposing a length hint (original) (raw)

Christian Heimes lists at cheimes.de
Sun Jul 15 16:33:23 CEST 2012

Am 15.07.2012 16:22, schrieb Antoine Pitrou:

On Mon, 16 Jul 2012 00:08:41 +1000 Nick Coghlan <ncoghlan at gmail.com> wrote:

Right, I agree on the value in being able to return something to say "this cannot be converted to a concrete container". Who would be able to return that, apart from trivial cases like itertools.cycle()?

For example most numerical sequence iterators like Fibonacci generator, prime number sequence generator and even trivial cases like even natural number generator. IMO it's a good idea to have a notation for infinitive iterators that can't be materialized as finite containers.

+1

Christian

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