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package Dezi::Cache; |
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use Moose; |
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14
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with 'Dezi::Role'; |
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use Carp; |
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use namespace::autoclean; |
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8485
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our $VERSION = '0.014'; |
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9
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has 'cache' => ( is => 'rw' ); |
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no Moose; # since we have our own 'has' method |
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=pod |
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=head1 NAME |
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Dezi::Cache - simple in-memory cache class |
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=head1 SYNOPSIS |
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use Dezi::Cache; |
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my $cache = Dezi::Cache->new; |
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$cache->add( foo => 'bar' ); |
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$cache->has( 'foo' ); # returns true |
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$cache->get( 'foo' ); # returns 'bar' |
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$cache->delete( 'foo' ); # removes 'foo' from cache and returns 'bar' |
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=head1 DESCRIPTION |
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30
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Dezi::Cache is a simple in-memory caching class. It's basically |
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just a Perl hash, but implemented as a class so that you can subclass it |
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and use different storage (e.g. Cache::* modules). |
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34
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=cut |
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36
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=head1 METHODS |
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See Dezi::Class. Only new or overridden methods are documented here. |
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=head2 BUILD |
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Initialize the cache. Called internally by new(). You should not need to |
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call this yourself. |
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=cut |
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47
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sub BUILD { |
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0
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1
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my $self = shift; |
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0
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0
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$self->{cache} ||= {}; |
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} |
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52
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=head2 cache([ I<hash_ref> ]) |
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54
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Get/set the internal in-memory cache. The default is just a hash ref. |
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Subclasses are encouraged to implement their own storage. |
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57
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=head2 has( I<key> ) |
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59
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Does I<key> exist in cache. |
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61
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=cut |
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63
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sub has { |
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0
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1
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my $self = shift; |
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0
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my $key = shift; |
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0
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defined($key) or croak "key required"; |
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0
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return exists $self->{cache}->{$key}; |
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} |
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70
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=head2 get( I<key> ) |
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72
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Returns value for I<key>. Returns undef if has( I<key> ) is false. |
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74
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=cut |
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76
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sub get { |
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0
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my $self = shift; |
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0
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my $key = shift; |
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0
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0
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defined($key) or croak "key required"; |
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0
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0
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return exists $self->{cache}->{$key} ? $self->{cache}->{$key} : undef; |
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} |
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83
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=head2 delete( I<key> ) |
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85
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Delete I<key> from cache. |
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86
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87
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=cut |
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89
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sub delete { |
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0
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0
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1
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my $self = shift; |
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0
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my $key = shift; |
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0
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0
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defined($key) or croak "key required"; |
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0
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delete $self->{cache}->{$key}; |
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} |
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95
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96
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=head2 add( I<key> => I<value> ) |
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97
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98
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Add I<key> to cache with value I<value>. |
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99
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100
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=cut |
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101
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102
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sub add { |
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103
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0
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0
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1
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my $self = shift; |
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0
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my $key = shift; |
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0
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my $val = shift; |
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0
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0
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defined($key) or croak "key required"; |
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107
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0
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$self->{cache}->{$key} = $val; |
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108
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} |
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109
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110
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1; |
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111
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112
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__END__ |
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113
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114
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=head1 AUTHOR |
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115
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116
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Peter Karman, E<lt>perl@peknet.comE<gt> |
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117
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118
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=head1 BUGS |
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119
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120
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Please report any bugs or feature requests to C<bug-swish-prog at rt.cpan.org>, or through |
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121
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the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Dezi-App>. |
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122
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I will be notified, and then you'll |
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123
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automatically be notified of progress on your bug as I make changes. |
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124
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125
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=head1 SUPPORT |
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126
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127
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You can find documentation for this module with the perldoc command. |
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128
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129
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perldoc Dezi |
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130
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131
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132
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You can also look for information at: |
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133
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134
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=over 4 |
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135
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136
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=item * Mailing list |
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137
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138
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L<http://lists.swish-e.org/listinfo/users> |
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139
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140
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=item * RT: CPAN's request tracker |
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141
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142
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L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Dezi-App> |
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143
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144
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=item * AnnoCPAN: Annotated CPAN documentation |
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145
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146
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L<http://annocpan.org/dist/Dezi-App> |
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147
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148
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=item * CPAN Ratings |
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149
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150
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L<http://cpanratings.perl.org/d/Dezi-App> |
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151
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152
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=item * Search CPAN |
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153
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154
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L<http://search.cpan.org/dist/Dezi-App/> |
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155
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156
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=back |
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157
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158
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=head1 COPYRIGHT AND LICENSE |
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159
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160
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Copyright 2008-2009 by Peter Karman |
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161
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162
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This library is free software; you can redistribute it and/or modify |
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163
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it under the same terms as Perl itself. |
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164
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165
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=head1 SEE ALSO |
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166
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167
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L<http://swish-e.org/> |