"John O'Hagan" <resea...@johnohagan.com> wrote in message
news:200903011520.29405.resea...@johnohagan.com...
Inspired by some recent threads here about using classes to extend the
behaviour of iterators, I'm trying to replace some some top-level
functions
aimed at doing such things with a class.
So far it's got a test for emptiness, a non-consuming peek-ahead method,
and
an extended next() which can return slices as well as the normal mode, but
one thing I'm having a little trouble with is getting generator
expressions
to restart when exhausted. This code works for generator functions:
[snip code]
The Python help shows the Python-equivalent code (or go to the source) for
things like itertools.islice and itertools.icycle, which sound like what you
are re-implementing. It looks like to handle generators icycle saves the
items as they are generated in another list, then uses the list to generate
successive iterations.
-Mark
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