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1 | |
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2 | package Moose::Meta::Attribute::Native::Trait::Counter; |
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3 | use Moose::Role; |
4 | |
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5 | our $VERSION = '1.15'; |
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6 | $VERSION = eval $VERSION; |
7 | our $AUTHORITY = 'cpan:STEVAN'; |
8 | |
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9 | use Moose::Meta::Method::Accessor::Native::Counter::dec; |
10 | use Moose::Meta::Method::Accessor::Native::Counter::inc; |
11 | use Moose::Meta::Method::Accessor::Native::Counter::reset; |
12 | use Moose::Meta::Method::Accessor::Native::Counter::set; |
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13 | |
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14 | with 'Moose::Meta::Attribute::Native::Trait' => |
15 | { -excludes => ['_root_types'] }; |
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16 | |
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17 | sub _default_default { 0 } |
18 | sub _default_is { 'ro' } |
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19 | sub _helper_type { 'Num' } |
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20 | sub _root_types { 'Num', 'Int' } |
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21 | |
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22 | no Moose::Role; |
23 | |
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24 | 1; |
25 | |
26 | __END__ |
27 | |
28 | =pod |
29 | |
30 | =head1 NAME |
31 | |
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32 | Moose::Meta::Attribute::Native::Trait::Counter - Helper trait for counters |
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33 | |
34 | =head1 SYNOPSIS |
35 | |
36 | package MyHomePage; |
37 | use Moose; |
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38 | |
39 | has 'counter' => ( |
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40 | traits => ['Counter'], |
41 | is => 'ro', |
42 | isa => 'Num', |
43 | default => 0, |
44 | handles => { |
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45 | inc_counter => 'inc', |
46 | dec_counter => 'dec', |
47 | reset_counter => 'reset', |
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48 | }, |
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49 | ); |
50 | |
51 | my $page = MyHomePage->new(); |
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52 | $page->inc_counter; # same as $page->counter( $page->counter + 1 ); |
53 | $page->dec_counter; # same as $page->counter( $page->counter - 1 ); |
54 | |
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55 | my $count_by_twos = 2; |
56 | $page->inc_counter($count_by_twos); |
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57 | |
58 | =head1 DESCRIPTION |
59 | |
60 | This module provides a simple counter attribute, which can be |
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61 | incremented and decremented by arbitrary amounts. The default |
62 | amount of change is one. |
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63 | |
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64 | =head1 PROVIDED METHODS |
65 | |
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66 | =over 4 |
67 | |
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68 | =item * B<set($value)> |
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69 | |
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70 | Sets the counter to the specified value and returns the new value. |
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71 | |
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72 | This method requires a single argument. |
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73 | |
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74 | =item * B<inc> |
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75 | |
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76 | =item * B<inc($arg)> |
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77 | |
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78 | Increases the attribute value by the amount of the argument, or by 1 if no |
79 | argument is given. This method returns the new value. |
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80 | |
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81 | This method accepts a single argument. |
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82 | |
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83 | =item * B<dec> |
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84 | |
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85 | =item * B<dec($arg)> |
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86 | |
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87 | Decreases the attribute value by the amount of the argument, or by 1 if no |
88 | argument is given. This method returns the new value. |
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89 | |
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90 | This method accepts a single argument. |
91 | |
92 | =item * B<reset> |
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93 | |
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94 | Resets the value stored in this slot to its default value, and returns the new |
95 | value. |
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96 | |
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97 | =back |
98 | |
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99 | =head1 BUGS |
100 | |
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101 | See L<Moose/BUGS> for details on reporting bugs. |
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102 | |
103 | =head1 AUTHOR |
104 | |
105 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
106 | |
107 | =head1 COPYRIGHT AND LICENSE |
108 | |
109 | Copyright 2007-2009 by Infinity Interactive, Inc. |
110 | |
111 | L<http://www.iinteractive.com> |
112 | |
113 | This library is free software; you can redistribute it and/or modify |
114 | it under the same terms as Perl itself. |
115 | |
116 | =cut |