[Python-Dev] Single- vs. Multi-pass iterability

[Greg Ewing]

Guido:

> Generally speaking, iterator implementations aren't created by making
> changes to an existing class

Continuing with my scanner example, it's conceivable
that I might want to give it an iterator interface
as an alternative to the existing one -- it's already
an iterator, really, it just doesn't have the
new standard iterator interface.

Greg Ewing, Computer Science Dept, +--------------------------------------+
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