Moose::Meta::Attribute::Native::Trait::Counter(3p)

NAME
Moose::Meta::Attribute::Native::Trait::Counter - Helper trait for counters

SYNOPSIS
  package MyHomePage;
  use Moose;

  has 'counter' => (
      traits    => ['Counter'],
      is        => 'ro',
      isa       => 'Num',
      default   => 0,
      handles   => {
          inc_counter   => 'inc',
          dec_counter   => 'dec',
          reset_counter => 'reset',
      },
  );

  my $page = MyHomePage->new();
  $page->inc_counter; # same as $page->counter( $page->counter + 1 );
  $page->dec_counter; # same as $page->counter( $page->counter - 1 );

  my $count_by_twos = 2;
  $page->inc_counter($count_by_twos);

DESCRIPTION
This module provides a simple counter attribute, which can be incremented and decremented by arbitrary amounts. The default amount of change is one.

PROVIDED METHODS
These methods are implemented in Moose::Meta::Attribute::Native::MethodProvider::Counter. It is important to note that all those methods do in place modification of the value stored in the attribute.

set($value)
    Set the counter to the specified value.

inc($arg)
    Increase the attribute value by the amount of the argument. No argument increments the value by 1.

dec($arg)
    Decrease the attribute value by the amount of the argument. No argument decrements the value by 1.

reset
    Resets the value stored in this slot to it's default value.

METHODS

meta
method_provider
has_method_provider

BUGS
See "BUGS" in Moose for details on reporting bugs.

AUTHOR
Stevan Little <stevan@iinteractive.com>

COPYRIGHT AND LICENSE
Copyright 2007-2009 by Infinity Interactive, Inc.

<http://www.iinteractive.com>

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.