NAME
Moose::Meta::Attribute::Native::Trait::Counter - Helper trait for counters
VERSION
version 1.9903
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 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.
DEFAULT TYPE
If you don't provide an isa
value for your attribute, it will default to Num
.
PROVIDED METHODS
set($value)
Sets the counter to the specified value and returns the new value.
This method requires a single argument.
inc
inc($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.
dec
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.
reset
Resets the value stored in this slot to its default value, and returns the new value.
BUGS
See "BUGS" in Moose for details on reporting bugs.
AUTHOR
Stevan Little <stevan@iinteractive.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 2010 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.