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Re: $#array issue

by citromatik (Curate)
on Jun 14, 2009 at 23:01 UTC ( #771481=note: print w/replies, xml ) Need Help??


in reply to $#array issue

If you comment the second line, $end will be undefined in the loop condition. Please, use strict and use warnings in your code if you want to learn Perl the easy way. This code works as expected:

use strict; use warnings; my @array=(1,2,3,4,5,6,7,8,9); my $end=($#array+1); my $index = 0; while($index < $end){ my $last=pop(@array); print "$last\n"; $index++; }

BTW, here are another ways to address the same problem:

my @array = (1..9); print +(pop @array),"\n" while (@array);

or even

my @array = (1..9); print "array[$_]\n" for (reverse (0..$#array));

citromatik

Replies are listed 'Best First'.
Re^2: $#array issue
by Your Mother (Chancellor) on Jun 14, 2009 at 23:14 UTC
    perl -le 'print and sleep 1 for 1 .. 3, "Jinx, you owe me a Coke."'

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Discipulus abracadabra.. Eily tranformed into a.. shop for bisexual peoples..
[LanX]: Eily don't be sad ... you are the Bishop of our hearts.
[marto]: 1nickt, I just said that in a Sean Connery accent
[LanX]: Discipulus++ # Bi-Shop
[Eily]: is the Bishop of hearts higher or lower ranked than the Jack?
[ambrus]: Higher.
[Eily]: Discipulus what's the merchandise? Other bi-people?
[1nickt]: marto would like to hear that. Of course he speaks very deliberately and dramatically, allowing pauses between words, so if anybody could pull it off it would be him, or someone impersonating him ...
[Eily]: Discipulus that's a chess joke BTW right? Because bishops don't walk straight :D
[choroba]: stop making chessy jokes about bishops!

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