#!/usr/bin/perl
# Figure 13.2: fig13_02.pl
# Demonstrates how to use references to arrays and hashes.

use strict;
use warnings;

my @array = qw( duck pig horse rooster cow );
my %hash = ( duck    => "quack",
             pig     => "oink",
             horse   => "neigh",
             rooster => "cock-a-doodle-doo",
             cow     => "moo" );

my $arrayReference = \@array;
my $hashReference = \%hash;

sub returnReference
{
   return \@array;
}

print( "@$arrayReference\n" );

print( "\$\$arrayReference[ 1 ] = $$arrayReference[ 1 ]\n" );
print( "\$arrayReference->[ 1 ] = $arrayReference->[ 1 ]\n" );
print
 ( "\${returnReference()}[ 1 ] = ${returnReference()}[ 1 ]\n\n" );

print( "\$\$hashReference{ duck } = $$hashReference{ duck }\n" );
print
 ( "\$hashReference->{ duck } = $hashReference->{ duck }\n\n" );

foreach ( keys( %$hashReference ) ) {
   print( "The $_ goes $hashReference->{ $_ }.\n" );
}

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