Data::Dumper is a core perl Module i.e. should come with Perl. Check the link to see more information about it.

A simple use case

#!/usr/bin/perl

use Data::Dumper;

use strict;
use warnings;

my @list = qw (hi there);
print Dumper(@list);
[download]

Output

$VAR1 = 'hi';
$VAR2 = 'there';
[download]