NAME¶
Moose::Meta::Attribute::Native::Trait::Counter - Helper trait for Int attributes
which represent counters
VERSION¶
version 2.0603
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¶
Moose is maintained by the Moose Cabal, along with the help of many
contributors. See "CABAL" in Moose and "CONTRIBUTORS" in
Moose for details.
COPYRIGHT AND LICENSE¶
This software is copyright (c) 2012 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.