itertools examples

[Felipe Almeida Lessa]

Em Sáb, 2006-02-11 às 20:16 -0800, Raymond Hettinger escreveu:
> Both work just fine.  It's a personal choice when to use map() and when
> to use a list comprehension.  Since many itertools have the flavor of
> map/filter, its use is not out of place in the itertools docs.

I know both work in the same way, but IIRC I heard someone (GvR?) saying
list comprehensions should be used when possible to substitute map,
filter and/or reduce.

> Also, the use of map() provided an opportunity to demonstrate
> operator.itemgetter().  While not essential to this example, it is
> helpful with several other tools (especially those with a key=
> argument).  Itertools provide a kind of iterator algebra and
> itemgetter() is an essential part of that algebra; hence, it is
> appropriate that it be included in itertool examples.
> 
> If your taste says otherwise, that's okay.  Program however you want.
> If reading the examples helped you understand the toolset, then the
> docs accomplished their goal.

IMO at a first glance the it's much easier to read and understand the
list comprehension, but I have to admit that if I didn't see the
operator.itemgetter(1) there I would probably never known it existed.
Well, so let's just leave it there, but I'll surely program with the
list comprehensions ;-).

Thanks for your attention,
Felipe.

> 
> Raymond
> 
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