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package Set::Scalar::Null; |
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3
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123
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use strict; |
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40
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22
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993
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local $^W = 1; |
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22
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22
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204
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use vars qw($VERSION @ISA); |
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52
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22
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1591
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8
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$VERSION = '1.29'; |
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@ISA = qw(Set::Scalar::Base Set::Scalar::Virtual); |
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22
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22
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12231
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use Set::Scalar::Virtual; |
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394
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1652
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198
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use Set::Scalar::Base; |
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45
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22
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1096
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use overload |
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128
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'neg' => \&_complement_overload; |
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32
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22
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134
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1
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1
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0
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sub SET_FORMAT { "(%s)" } |
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18
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sub _new_hook { |
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959
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959
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1188
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my $self = shift; |
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959
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1722
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my $universe = $_[0]->[0]; |
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22
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959
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2905
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$self->universe( $universe ); |
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} |
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sub universe { |
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7270
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7270
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0
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8577
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my $self = shift; |
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28
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7270
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100
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19849
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$self->{'universe'} = shift if @_; |
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7270
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25890
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return $self->{'universe'}; |
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} |
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sub elements { |
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1
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0
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return (); |
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} |
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sub size { |
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5872
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5872
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0
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22190
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return 0; |
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} |
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sub _complement_overload { |
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250
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250
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2145
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my $self = shift; |
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44
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250
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846
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return Set::Scalar->new( $self->universe->elements ); |
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} |
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=pod |
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=head1 NAME |
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51
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Set::Scalar::Null - internal class for Set::Scalar |
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53
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=head1 SYNOPSIS |
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55
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B. |
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57
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=head1 DESCRIPTION |
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59
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B |
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If you want documentation see L. |
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62
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=head1 AUTHOR |
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64
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Jarkko Hietaniemi |
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66
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=cut |
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68
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1; |