MooseX::AttributeHelpers::Trait::Counter(3p)

NAME
MooseX::AttributeHelpers::Trait::Counter

VERSION
version 0.25

SYNOPSIS
  package MyHomePage;
  use Moose;
  use MooseX::AttributeHelpers;

  has 'counter' => (
      metaclass => 'Counter',
      is        => 'ro',
      isa       => 'Num',
      default   => sub { 0 },
      provides  => {
          inc => 'inc_counter',
          dec => 'dec_counter',
          reset => 'reset_counter',
      }
  );

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

DESCRIPTION
This module provides a simple counter attribute, which can be incremented and decremeneted.

If your attribute definition does not include any of is, isa, default or provides but does use the "Counter" metaclass, then this module applies defaults as in the "SYNOPSIS" above. This allows for a very basic counter definition:

  has 'foo' => (metaclass => 'Counter');
  $obj->inc_foo;

METHODS

meta
method_provider
has_method_provider
helper_type
process_options_for_provides
    Run before its superclass method.

check_provides_values
    Run after its superclass method.

PROVIDED METHODS
It is important to note that all those methods do in place modification of the value stored in the attribute.

set Set the counter to the specified value.

inc Increments the value stored in this slot by 1. Providing an argument will cause the counter to be increased by specified amount.

dec Decrements the value stored in this slot by 1. Providing an argument will cause the counter to be increased by specified amount.

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

SUPPORT
Bugs may be submitted through the RT bug tracker <https://rt.cpan.org/Public/Dist/Display.html?Name=MooseX-AttributeHelpers> (or bug-MooseX-AttributeHelpers@rt.cpan.org <mailto:bug-MooseX-AttributeHelpers@rt.cpan.org>).

There is also a mailing list available for users of this distribution, at <http://lists.perl.org/list/moose.html>.

There is also an irc channel available for users of this distribution, at "#moose" on "irc.perl.org" <irc://irc.perl.org/#moose>.

AUTHOR
Stevan Little <stevan@iinteractive.com>

COPYRIGHT AND LICENSE
This software is copyright (c) 2007 by Stevan Little and Infinity Interactive, Inc.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.