package SubscriberList;

use strict;
use warnings;
use vars qw($VERSION);

$VERSION     = '0.01';

use Data::Dumper;
use DB_File;
use Storable qw(freeze thaw);

sub new
{
  my ($class,%args) = @_;

  # get args
  my $this;
  $this->{filename} = $args{filename};
  tie %{$this->{db}}, 'DB_File', $this->{filename};

  bless $this, $class;
  return $this;
}

sub DESTROY
  {
    my ($this) = @_;
    untie %{$this->{db}};
  }

sub add_subscriber
  {
    my ($this,%new_sub) = @_;
    
    my $email = $new_sub{email};
    delete $new_sub{email};

    $this->{db}->{$email} = freeze \%new_sub;

    return $this;
  }
1;


##</code><code>##

# test.pl
use SubscriberList;

$list = new SubscriberList(filename=>'test.db');

$list->add_subscriber(
  		      email=>'new@email.com',
		      first_name => 'New',
		      last_name  => 'Subscriber',
  		     );

$list->add_subscriber(
  		      email=>'jar@jar.com',
		      first_name => 'JarJar',
		      last_name  => 'Binks',
  		     );


##</code><code>##

use Data::Dumper;
use DB_File;
tie %hash, 'DB_File', 'test.db';
print Dumper(\%hash);

############
Ouput
$VAR1 = {};