#!/usr/bin/perl -w
use strict;

my @objects = (
  {
    name => 'sheep',
    speak => sub { "baaah" }
  },
  {
    name => 'dog',
    speak => sub { "woof" }
    },
  {
    name => 'mouse',
    speak => sub { "squeak (almost silently)" }
  },
  {
    name => 'fish',
    speak => sub { ".oO()" }
  }
);

printf "a %s goes %s.\n", $_->{name}, $_->{speak}->()
  for @objects;

__END__
a sheep goes baaah.
a dog goes woof.
a mouse goes squeak (almost silently).
a fish goes .oO().