#!/usr/bin/perl
use warnings;
use strict;

use Data::Dumper;

my @file_attachments = (
                        {file => 'test1.zip',  price  => '10.00',  desc  => 'the 1st test'},
                        {file => 'test2.zip',  price  => '12.00',  desc  => 'the 2nd test'},
                        {file => 'test3.zip',  price  => '13.00',  desc  => 'the 3rd test'},
                        {file => 'test4.zip',  price  => '14.00',  desc  => 'the 4th test'}
                       );

# Get the number of items (hashes) in the array.
my $file_no = scalar (@file_attachments);
# $file_no is now: 4 in this instance as there is 4 hashes in the array.


# Looping through the hash and printing out all the hash "file" elements.
for my $file_attachment (@file_attachments)
{
    print "$file_attachment\n";
}

# Looping through the hash and printing out all the hash "price" elements.
for my $file_attachment (@file_attachments)
{
    print $file_attachment->{price}, "\n";
}

# Looping through the hash and printing out all the hash "desc" elements.
for my $file_attachment (@file_attachments)
{
    print $file_attachment->{desc}, "\n";
}

# Change price to an array reference.
$file_attachments[0]{price} = [12, 12.5];

$file_attachments[1]{price} = [ $file_attachments[1]{price} ];
push @{ $file_attachments[1]{price} }, 10.5;


$file_attachments[2]{price} = [];
@{ $file_attachments[2]{price} } = (13, 13.5);

print Dumper \@file_attachments;