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package Statistics::Basic::ComputedVector; |
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133
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use strict; |
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1091
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134
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use warnings; |
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645
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110
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use Carp; |
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2040
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our $tag_number = 0; |
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148
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use Statistics::Basic; |
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251
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154
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use base 'Statistics::Basic::Vector'; |
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24199
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# new {{{ |
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sub new { |
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1
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my $class = shift; |
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50
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my $that = eval { Statistics::Basic::Vector->new(@_) } or croak $@; |
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40
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croak "input vector must be supplied to ComputedVector" unless defined $that; |
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my $this = bless { tag=>(--$tag_number), c=>{}, input_vector=>$that, output_vector=>Statistics::Basic::Vector->new() }, $class; |
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40
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$this->_recalc_needed; |
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return $this; |
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} |
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# }}} |
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# copy {{{ |
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sub copy { |
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0
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1
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my $this = shift; |
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0
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my $that = __PACKAGE__->new( $this->{input_vector} ); |
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$that->{computer} = $this->{computer}; |
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warn "copied computedvector($this -> $that)\n" if $Statistics::Basic::DEBUG >= 3; |
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0
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return $that; |
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} |
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# }}} |
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# set_filter {{{ |
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sub set_filter { |
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1
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my $this = shift; |
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12
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my $cref = shift; croak "cref should be a code reference" unless ref($cref) eq "CODE"; |
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41
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12
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$this->{computer} = $cref; |
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12
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my $a = Scalar::Util::refaddr($this); |
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12
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60
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$this->{input_vector}->_set_computer( "cvec_$a" => $this ); # sets recalc needed in this object |
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return $this; |
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} |
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# }}} |
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# _recalc {{{ |
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sub _recalc { |
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my $this = shift; |
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53
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18
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delete $this->{recalc_needed}; |
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55
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18
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100
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if( ref( my $c = $this->{computer} ) eq "CODE" ) { |
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15
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$this->{output_vector}->set_vector( [$c->($this->{input_vector}->query)] ); |
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58
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} else { |
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3
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$this->{output_vector}->set_vector( [$this->{input_vector}->query] ); |
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} |
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62
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18
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50
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55
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warn "[recalc " . ref($this) . "]\n" if $Statistics::Basic::DEBUG; |
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18
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61
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$this->_inform_computers_of_change; |
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65
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18
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return; |
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} |
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# }}} |
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# _recalc_needed {{{ |
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sub _recalc_needed { |
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33
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37
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my $this = shift; |
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33
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390
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$this->{recalc_needed} = 1; |
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73
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33
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50
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warn "[recalc_needed " . ref($this) . "]\n" if $Statistics::Basic::DEBUG; |
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75
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33
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83
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return; |
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} |
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# }}} |
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# query_size {{{ |
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sub query_size { |
80
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18
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18
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1
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260
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my $this = shift; |
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82
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18
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100
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55
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$this->_recalc if $this->{recalc_needed}; |
83
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84
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18
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48
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return $this->{output_vector}->query_size; |
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} |
86
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87
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# maybe deprecate this later |
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*size = \&query_size unless $ENV{TEST_AUTHOR}; |
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90
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# }}} |
91
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# query {{{ |
92
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sub query { |
93
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35
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35
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1
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60
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my $this = shift; |
94
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95
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35
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100
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82
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$this->_recalc if $this->{recalc_needed}; |
96
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97
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35
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89
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return $this->{output_vector}->query; |
98
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} |
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# }}} |
100
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101
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0
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0
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1
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0
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sub query_vector { return $_[0]{input_vector} } |
102
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103
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# query_filled {{{ |
104
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sub query_filled { |
105
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12
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12
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1
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19
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my $this = shift; |
106
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107
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# even though this makes little sense, imo, we need to provide it since so many other objects call it |
108
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109
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12
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50
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31
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$this->_recalc if $this->{recalc_needed}; |
110
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111
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12
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35
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return $this->{input_vector}->query_filled; |
112
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} |
113
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# }}} |
114
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115
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0
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0
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sub _fix_size { croak "fix_size() makes no sense on computed vectors" } |
116
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0
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0
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1
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sub set_size { my $this = shift; $this->{input_vector}->set_size (@_); return $this } |
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0
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0
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0
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117
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1
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1
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1
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481
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sub insert { my $this = shift; $this->{input_vector}->insert (@_); return $this } |
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1
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5
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1
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2
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118
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1
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1
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1
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3
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sub ginsert { my $this = shift; $this->{input_vector}->ginsert (@_); return $this } |
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1
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4
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1
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2
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119
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0
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0
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1
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sub append { my $this = shift; $this->{input_vector}->append (@_); return $this } |
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0
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0
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0
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0
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120
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2
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2
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1
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638
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sub set_vector { my $this = shift; $this->{input_vector}->set_vector(@_); return $this } |
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2
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9
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2
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2
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121
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122
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1; |