Perl vs Python, minor things i

2008-04-10 07:23:16

Python has the rather nifty enumerate for those times when you want to iterate over a sequence with an index:

>>> l = ['spam', 'eggs', 'spam']
>>> for (i, j) in enumerate(l):
...     print i, j
... 
0 spam
1 eggs
2 spam

I’m enjoying reawakening those dormant brain cells where the Perl lives, but I miss these little niceties.

From Michael on 2008-04-10 09:24:31

use List::MoreUtils qw!pairwise!;

@l = qw!spam eggs spam!;

pairwise { print “$a $b\n” } (0..scalar @l), @l;

OK, not as obvious, and not as builtin, but it’s there!

From Sam Vilain on 2008-04-21 10:50:47

CPAN to the rescue. Using Array::Each::Override

use Array::Each::Override;
my @array = qw(a b c);
while (my ($i, $val) = each @array) {
print “Position $i contains: $val\n”;
}

Tags: python ~ perl

Rendered at 2010-08-01 22:30:17

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