Moose::Meta::Attribute::Native::Trait::Counter - Helper trait for counters
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);
This module provides a simple counter attribute, which can be incremented and decremented by arbitrary amounts. The default amount of change is one.
These methods are implemented in Moose::Meta::Attribute::Native::MethodProvider::Counter. It is important to note that all those methods do in place modification of the value stored in the attribute.
Set the counter to the specified value.
Increase the attribute value by the amount of the argument. No argument increments the value by 1.
Decrease the attribute value by the amount of the argument. No argument decrements the value by 1.
Resets the value stored in this slot to it's default value.
See "BUGS" in Moose for details on reporting bugs.
Stevan Little <stevan@iinteractive.com>
Copyright 2007-2009 by Infinity Interactive, Inc.
http://www.iinteractive.com
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
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cpanm
cpanm Moose
CPAN shell
perl -MCPAN -e shell install Moose
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