[Python-Dev] iterators

[Jack Jansen]

>   it = something.newiterator()
>   for x over it:
>       if time_to_start_second_loop(): break
>       do_something()
>   for x over it:
>       do_something_else()

Another, similar, paradigm I find myself often using is something like
    tmplist = []
    for x in origlist:
        if x.has_some_property():
           tmplist.append(x)
        else
           do_something()
    for x in tmplist:
        do_something_else()

I think I'd like it if iterators could do something like
    it = origlist.iterator()
    for x in it:
        if x.has_some_property():
           it.pushback()
        else
           do_something()
    for x in it:
        do_something_else()

--
Jack Jansen             | ++++ stop the execution of Mumia Abu-Jamal ++++
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www.oratrix.nl/~jack    | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm