If you are sure that the string is even sized, you can use a simple regex like this: 

use strict;
use warnings;

my $string = "0102030405";
# will miss the last character when string is odd sized
my @elements = $string =~ m/(..)/g;
print "@elements\n";

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Update: modified code

In reply to Re: Split on every second character by linuxer
in thread Split on every second character by gri6507

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