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package Moose::Meta::Attribute::Native::Trait::Counter;
our $VERSION = '2.4000';
use Moose::Role;
with 'Moose::Meta::Attribute::Native::Trait';
sub _helper_type { 'Num' }
sub _root_types { 'Num', 'Int' }
no Moose::Role;
1;
# ABSTRACT: Helper trait for Int attributes which represent counters
__END__
=pod
=encoding UTF-8
=head1 NAME
Moose::Meta::Attribute::Native::Trait::Counter - Helper trait for Int attributes which represent counters
=head1 VERSION
version 2.4000
=head1 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);
=head1 DESCRIPTION
This trait provides native delegation methods for counters. A counter can be
any sort of number (integer or not). The delegation methods allow you to
increment, decrement, or reset the value.
=head1 DEFAULT TYPE
If you don't provide an C<isa> value for your attribute, it will default to
C<Num>.
=head1 PROVIDED METHODS
=over 4
=item * B<set($value)>
Sets the counter to the specified value and returns the new value.
This method requires a single argument.
=item * B<inc>
=item * B<inc($arg)>
Increases the attribute value by the amount of the argument, or by 1 if no
argument is given. This method returns the new value.
This method accepts a single argument.
=item * B<dec>
=item * B<dec($arg)>
Decreases the attribute value by the amount of the argument, or by 1 if no
argument is given. This method returns the new value.
This method accepts a single argument.
=item * B<reset>
Resets the value stored in this slot to its default value, and returns the new
value.
=back
=head1 BUGS
See L<Moose/BUGS> for details on reporting bugs.
=head1 AUTHORS
=over 4
=item *
Stevan Little <stevan@cpan.org>
=item *
Dave Rolsky <autarch@urth.org>
=item *
Jesse Luehrs <doy@cpan.org>
=item *
Shawn M Moore <sartak@cpan.org>
=item *
יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
=item *
Karen Etheridge <ether@cpan.org>
=item *
Florian Ragwitz <rafl@debian.org>
=item *
Hans Dieter Pearcey <hdp@cpan.org>
=item *
Chris Prather <chris@prather.org>
=item *
Matt S Trout <mstrout@cpan.org>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2006 by 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.
=cut
|
