On 9 Dec 2013 01:47, "Chris Angelico" <rosuav@gmail.com> wrote:
On Mon, Dec 9, 2013 at 2:40 AM, Ron Adam <ron3200@gmail.com> wrote:
The function would need to be a wrapper that keeps a buffer. And the
front
of the buffer would always be the next to be yielded if there is anything in it.
Which is what Stephen said in his pithy message above. Yes, it's theoretically possible, but it's not something to do in the general case. Not something to depend on for a chunker/grouper, which should be able to pass once over the underlying iterator.
tee() is this building block. Cheers, Nick.
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