Here's my take (which doesn't require turning off warnings): 
use strict;
use warnings;

my $i = 0;
my $size = 10;
my $string = 'some long string';
my @substrings;
my $len = length($string);

while($i <= $len) {
    push(@substrings, substr($string, $i, $size));
    $i += $size;
}

$" = "\n";
print "@substrings\n";

[download]
UPDATE: copied the "remove temp vars" from above posts.

In reply to Re: Eliminating substr warnings by saberworks
in thread Eliminating substr warnings by ezekiel

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