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1 | package MooseX::AttributeHelpers::MethodProvider::List; |
2 | use Moose::Role; |
3 | |
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4 | our $VERSION = '0.12_01'; |
5 | $VERSION = eval $VERSION; |
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6 | our $AUTHORITY = 'cpan:STEVAN'; |
7 | |
8 | sub count : method { |
9 | my ($attr, $reader, $writer) = @_; |
10 | return sub { |
11 | scalar @{$reader->($_[0])} |
12 | }; |
13 | } |
14 | |
15 | sub empty : method { |
16 | my ($attr, $reader, $writer) = @_; |
17 | return sub { |
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18 | scalar @{$reader->($_[0])} ? 1 : 0 |
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19 | }; |
20 | } |
21 | |
22 | sub find : method { |
23 | my ($attr, $reader, $writer) = @_; |
24 | return sub { |
25 | my ($instance, $predicate) = @_; |
26 | foreach my $val (@{$reader->($instance)}) { |
27 | return $val if $predicate->($val); |
28 | } |
29 | return; |
30 | }; |
31 | } |
32 | |
33 | sub map : method { |
34 | my ($attr, $reader, $writer) = @_; |
35 | return sub { |
36 | my ($instance, $f) = @_; |
37 | CORE::map { $f->($_) } @{$reader->($instance)} |
38 | }; |
39 | } |
40 | |
41 | sub grep : method { |
42 | my ($attr, $reader, $writer) = @_; |
43 | return sub { |
44 | my ($instance, $predicate) = @_; |
45 | CORE::grep { $predicate->($_) } @{$reader->($instance)} |
46 | }; |
47 | } |
48 | |
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49 | sub elements : method { |
50 | my ($attr, $reader, $writer) = @_; |
51 | return sub { |
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52 | my ($instance) = @_; |
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53 | @{$reader->($instance)} |
54 | }; |
55 | } |
56 | |
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57 | sub join : method { |
58 | my ($attr, $reader, $writer) = @_; |
59 | return sub { |
60 | my ($instance, $separator) = @_; |
61 | join $separator, @{$reader->($instance)} |
62 | }; |
63 | } |
64 | |
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65 | sub get : method { |
66 | my ($attr, $reader, $writer) = @_; |
67 | return sub { |
68 | $reader->($_[0])->[$_[1]] |
69 | }; |
70 | } |
71 | |
72 | sub first : method { |
73 | my ($attr, $reader, $writer) = @_; |
74 | return sub { |
75 | $reader->($_[0])->[0] |
76 | }; |
77 | } |
78 | |
79 | sub last : method { |
80 | my ($attr, $reader, $writer) = @_; |
81 | return sub { |
82 | $reader->($_[0])->[-1] |
83 | }; |
84 | } |
85 | |
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86 | 1; |
87 | |
88 | __END__ |
89 | |
90 | =pod |
91 | |
92 | =head1 NAME |
93 | |
94 | MooseX::AttributeHelpers::MethodProvider::List |
95 | |
96 | =head1 DESCRIPTION |
97 | |
98 | This is a role which provides the method generators for |
99 | L<MooseX::AttributeHelpers::Collection::List>. |
100 | |
101 | =head1 METHODS |
102 | |
103 | =over 4 |
104 | |
105 | =item B<meta> |
106 | |
107 | =back |
108 | |
109 | =head1 PROVIDED METHODS |
110 | |
111 | =over 4 |
112 | |
113 | =item B<count> |
114 | |
115 | =item B<empty> |
116 | |
117 | =item B<find> |
118 | |
119 | =item B<grep> |
120 | |
121 | =item B<map> |
122 | |
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123 | =item B<elements> |
124 | |
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125 | =item B<join> |
126 | |
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127 | =item B<get> |
128 | |
129 | =item B<first> |
130 | |
131 | =item B<last> |
132 | |
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133 | =back |
134 | |
135 | =head1 BUGS |
136 | |
137 | All complex software has bugs lurking in it, and this module is no |
138 | exception. If you find a bug please either email me, or add the bug |
139 | to cpan-RT. |
140 | |
141 | =head1 AUTHOR |
142 | |
143 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
144 | |
145 | =head1 COPYRIGHT AND LICENSE |
146 | |
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147 | Copyright 2007-2008 by Infinity Interactive, Inc. |
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148 | |
149 | L<http://www.iinteractive.com> |
150 | |
151 | This library is free software; you can redistribute it and/or modify |
152 | it under the same terms as Perl itself. |
153 | |
154 | =cut |