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MooseX::AttributeHelpers::Trait::Counter

NAME

MooseX::AttributeHelpers::Trait::Counter − simple counter attribute

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 AT rt DOT cpan DOT org <mailto:bug-MooseX-AttributeHelpers AT rt DOT cpan DOT 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 AT iinteractive DOT 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.

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