Dear Monks,

I need you wisdom once again. Although that I have found an answer to my question, I need your skills to help me understand why the output is formatted like this.

I want to split a user input based on the length of characters.

I modified the title, to actually describe better my question and to avoid confusion for future readers. The observation came from ww and thank you for the suggestion.

Sample of a working example is given bellow with the output as expected:

#! /usr/local/bin/perl
use strict;
use warnings;
use Data::Dumper;

my $input = "1234567890abcdefghij0987654321ABCDEFGHIJlmnop";

chomp $input;

# A  "A text (ASCII) string, will be space padded."

my @chunks = unpack("(A10)*", $input);

print Dumper(\@chunks);

__END__

$VAR1 = [
          '1234567890',
          'abcdefghij',
          '0987654321',
          'ABCDEFGHIJ',
          'lmnop'
        ];
[download]

While I was trying different solutions in order to reach to the solution I thought about using split and regex. The program seems to be working correctly but I do get blank lines, why? I can not understand where I am going wrong. I tried to use chomp but as it looks like there are no trailing "new line" characters. Does anyone understands why this is happening?

Sample of working code provided under:

#! /usr/local/bin/perl
use strict;
use warnings;
use Data::Dumper;

my $input = "1234567890abcdefghij0987654321ABCDEFGHIJlmnop";

chomp $input;


my @chunks = split(/(.{10})/,$input);

print Dumper(\@chunks);

__END__

$VAR1 = [
          '',
          '1234567890',
          '',
          'abcdefghij',
          '',
          '0987654321',
          '',
          'ABCDEFGHIJ',
          'lmnop'
        ];
[download]

Thank you all for your time and effort reading and replying to my question.