[EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> Ruby has a neat little convenience when writing loops where you don't
> care about the loop index: you just do n.times do { ... some
> code ... } where n is an integer representing how many times you want
> to execute "some code."
>
> In Python, the direct translation of this is a for loop. When the
> index doesn't matter to me, I tend to write it as:
>
> for _ in xrange (1,n):
> some code
>
> An alternative way of indicating that you don't care about the loop
> index would be
>
> for dummy in xrange (1,n):
> some code
I use pychecker a lot. It views variables called [ '_', 'unused',
'empty', 'dummy' ] as names to ignore if they haven't been used.
So according to pychecker '_' and 'dummy' would both be OK.
As for me personally, I usually use '_' but sometimes use 'dummy'
depending on the surrounding code.
Note that this idiom is fairly common in python too
wanted, _, _, _, also_wanted = a_list
which looks quite neat to my eyes.
--
Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick
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