When is List Comprehension inappropriate?
steve at REMOVE.THIS.cybersource.com.au
Tue Mar 20 04:55:06 CET 2007
On Mon, 19 Mar 2007 07:41:59 -0700, Ben wrote:
> I have recently learned how list comprehension works and am finding it
> extremely cool. I am worried, however, that I may be stuffing it into
> places that it does not belong.
Others have suggested reasons why you might or might not want to use list
comprehensions. Here's three more reasons:
* You have a LOT of data to handle. (But remember that a lot to you might
not be a lot to your computer.)
* You don't need to handle the items all at once, and can handle the items
one at a time instead.
Use an iterator, generator expression, or other lazily-evaluated function
instead. That way you avoid forming the list all at once.
* You have to write code that's backwards-compatible to an old version of
Use a list and a for-loop.
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