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package Wikibase::Datatype::Struct::Utils; |
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3
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34
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369459
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use base qw(Exporter); |
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123
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34
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3690
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227
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use strict; |
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737
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5
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use warnings; |
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984
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7
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use English; |
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8074
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274
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34
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18129
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use Error::Pure qw(err); |
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16230
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34
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1507
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4506
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use List::MoreUtils qw(none); |
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87208
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34
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302
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Readonly::Array our @EXPORT_OK => qw(obj_array_ref2struct struct2snaks_array_ref); |
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our $VERSION = 0.08; |
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sub obj_array_ref2struct { |
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1
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6862
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my ($snaks_ar, $key, $base_uri, $snak_obj, $struct_snak_obj) = @_; |
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18
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100
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38
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if (! defined $snak_obj) { |
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10
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23
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$snak_obj = 'Wikibase::Datatype::Snak'; |
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} |
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100
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48
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if (! defined $struct_snak_obj) { |
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$struct_snak_obj = 'Wikibase::Datatype::Struct::Snak'; |
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} |
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11
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866
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eval "require $struct_snak_obj"; |
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50
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66
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if ($EVAL_ERROR) { |
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0
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0
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err "Cannot load '$struct_snak_obj'"; |
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} |
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100
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50
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if (! defined $base_uri) { |
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1
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5
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err 'Base URI is required.'; |
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} |
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10
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53
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my $snaks_hr = { |
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$key.'-order' => [], |
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$key => {}, |
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}; |
37
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10
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foreach my $snak_o (@{$snaks_ar}) { |
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32
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38
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19
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100
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92
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if (! $snak_o->isa($snak_obj)) { |
39
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1
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8
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err "Object isn't '$snak_obj'."; |
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} |
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42
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18
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100
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67
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if (! exists $snaks_hr->{$key}->{$snak_o->property}) { |
43
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17
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181
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$snaks_hr->{$key}->{$snak_o->property} = []; |
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} |
45
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18
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100
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100
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119
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if (! @{$snaks_hr->{$key.'-order'}} |
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104
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46
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|| none { $_ eq $snak_o->property } @{$snaks_hr->{$key.'-order'}}) { |
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41
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47
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48
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17
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86
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push @{$snaks_hr->{$key.'-order'}}, $snak_o->property; |
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59
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49
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} |
50
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18
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132
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push @{$snaks_hr->{$key}->{$snak_o->property}}, |
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18
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48
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51
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eval $struct_snak_obj.'::obj2struct($snak_o, $base_uri);'; |
52
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} |
53
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54
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9
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57
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return $snaks_hr; |
55
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} |
56
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57
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sub struct2snaks_array_ref { |
58
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14
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14
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1
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7115
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my ($struct_hr, $key, $struct_snak_obj) = @_; |
59
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60
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14
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100
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50
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if (! defined $struct_snak_obj) { |
61
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13
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30
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$struct_snak_obj = 'Wikibase::Datatype::Struct::Snak'; |
62
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} |
63
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14
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1031
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eval "require $struct_snak_obj"; |
64
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14
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50
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74
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if ($EVAL_ERROR) { |
65
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0
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0
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err "Cannot load '$struct_snak_obj'"; |
66
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} |
67
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68
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14
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36
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my $snaks_ar = []; |
69
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14
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27
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foreach my $property (@{$struct_hr->{$key.'-order'}}) { |
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14
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59
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70
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20
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37
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push @{$snaks_ar}, map { |
71
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21
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1195
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eval $struct_snak_obj.'::struct2obj($_)'; |
72
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20
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35
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} @{$struct_hr->{$key}->{$property}}; |
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20
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53
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73
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20
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100
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4815
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if ($EVAL_ERROR) { |
74
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2
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7
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err $EVAL_ERROR; |
75
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} |
76
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} |
77
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78
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12
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82
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return $snaks_ar; |
79
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} |
80
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81
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1; |
82
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83
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__END__ |
84
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85
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=pod |
86
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87
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=encoding utf8 |
88
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89
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=head1 NAME |
90
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91
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Wikibase::Datatype::Struct::Utils - Wikibase structure serialization utilities. |
92
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93
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=head1 SYNOPSIS |
94
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95
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use Wikibase::Datatype::Struct::Utils qw(obj_array_ref2struct struct2snaks_array_ref); |
96
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97
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my $snaks_hr = obj_array_ref2struct($snaks_ar, $key, $base_uri, $snak_obj, $struct_snak_obj); |
98
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my $snaks_ar = struct2snaks_array_ref($struct_hr, $key, $struct_snak_obj); |
99
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100
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=head1 SUBROUTINES |
101
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102
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=head2 C<obj_array_ref2struct> |
103
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104
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my $snaks_hr = obj_array_ref2struct($snaks_ar, $key, $base_uri, $snak_obj); |
105
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106
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Helper subroutine for converting list of Snak objects to snaks structure. |
107
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This subroutine is used in Statement and Reference module. |
108
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C<$base_uri> is base URI of Wikibase system (e.g. http://test.wikidata.org/entity/). |
109
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C<$snak_obj> is object for snak (default value is 'Wikibase::Datatype::Snak'). |
110
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C<$struct_snak_obj> is object for struct snak (default value is 'Wikibase::Datatype::Struct::Snak'). |
111
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112
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Returns structure with multiple snaks. |
113
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114
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=head2 C<struct2snaks_array_ref> |
115
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116
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my $snaks_ar = struct2snaks_array_ref($struct_hr, $key, $struct_snak_obj); |
117
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118
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Helper subroutine for converting snaks structure to list of Snak objects. |
119
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This subroutine is used in Statement and Reference module. |
120
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C<$struct_snak_obj> is object for struct snak (default value is 'Wikibase::Datatype::Struct::Snak'). |
121
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122
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Returns reference to array with snaks objects. |
123
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124
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=head1 ERRORS |
125
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126
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obj_array_ref2struct(): |
127
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Base URI is required. |
128
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Object isn't 'Wikibase::Datatype::Snak'. |
129
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130
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struct2snaks_array_ref(): |
131
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From Wikibase::Datatype::Snak::new(): |
132
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From Wikibase::Datatype::Utils::check_required(): |
133
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Parameter 'datatype' is required. |
134
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Parameter 'datavalue' is required. |
135
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Parameter 'property' is required. |
136
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From Wikibase::Datatype::Utils::check_isa(): |
137
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Parameter 'datavalue' must be a 'Wikibase::Datatype::Value::%s' object. |
138
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Parameter 'datatype' = '%s' isn't supported. |
139
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Parameter 'property' must begin with 'P' and number after it. |
140
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Parameter 'snaktype' = '%s' isn't supported. |
141
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From Wikibase::Datatype::Struct::Snak::struct2obj(): |
142
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From Wikibase::Datatype::Struct::Value::struct2obj(): |
143
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Entity type '%s' is unsupported. |
144
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Type doesn't exist. |
145
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Type '%s' is unsupported. |
146
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147
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=head1 EXAMPLE1 |
148
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149
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use strict; |
150
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use warnings; |
151
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152
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use Data::Printer; |
153
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use Wikibase::Datatype::Snak; |
154
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use Wikibase::Datatype::Struct::Utils qw(obj_array_ref2struct); |
155
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use Wikibase::Datatype::Value::Item; |
156
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use Wikibase::Datatype::Value::String; |
157
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158
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my $snak1 = Wikibase::Datatype::Snak->new( |
159
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'datatype' => 'wikibase-item', |
160
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'datavalue' => Wikibase::Datatype::Value::Item->new( |
161
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'value' => 'Q5', |
162
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), |
163
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'property' => 'P31', |
164
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); |
165
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my $snak2 = Wikibase::Datatype::Snak->new( |
166
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'datatype' => 'math', |
167
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'datavalue' => Wikibase::Datatype::Value::String->new( |
168
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'value' => 'E = m c^2', |
169
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), |
170
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'property' => 'P2534', |
171
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); |
172
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173
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# Convert list of snak objects to structure. |
174
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my $snaks_ar = obj_array_ref2struct([$snak1, $snak2], 'snaks', |
175
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'http://test.wikidata.org/entity/'); |
176
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177
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# Dump to output. |
178
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|
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p $snaks_ar; |
179
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180
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# Output: |
181
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# \ { |
182
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# snaks { |
183
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# P31 [ |
184
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# [0] { |
185
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# datatype "wikibase-item", |
186
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# datavalue { |
187
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# type "wikibase-entityid", |
188
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# value { |
189
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# entity-type "item", |
190
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# id "Q5", |
191
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# numeric-id 5 |
192
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# } |
193
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# }, |
194
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# property "P31", |
195
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# snaktype "value" |
196
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# } |
197
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# ], |
198
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# P2534 [ |
199
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# [0] { |
200
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# datatype "math", |
201
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# datavalue { |
202
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# type "string", |
203
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# value "E = m c^2" |
204
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# }, |
205
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|
# property "P2534", |
206
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# snaktype "value" |
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# } |
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# ] |
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# }, |
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# snaks-order [ |
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# [0] "P31", |
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# [1] "P2534" |
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# ] |
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# } |
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=head1 EXAMPLE2 |
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use strict; |
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use warnings; |
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use Wikibase::Datatype::Struct::Utils qw(struct2snaks_array_ref); |
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my $struct_hr = { |
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'snaks' => { |
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'P31' => [{ |
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'datatype' => 'wikibase-item', |
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'datavalue' => { |
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'type' => 'wikibase-entityid', |
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'value' => { |
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'entity-type' => 'item', |
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'id' => 'Q5', |
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'numeric-id' => 5, |
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}, |
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}, |
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'property' => 'P31', |
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'snaktype' => 'value', |
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}], |
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'P2534' => [{ |
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'datatype' => 'math', |
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'datavalue' => { |
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'type' => 'string', |
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'value' => 'E = m c^2', |
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}, |
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'property' => 'P2534', |
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'snaktype' => 'value', |
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}], |
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}, |
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'snaks-order' => [ |
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'P31', |
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'P2534', |
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], |
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}; |
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255
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# Convert snaks structure to list of Snak objects. |
256
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my $snaks_ar = struct2snaks_array_ref($struct_hr, 'snaks'); |
257
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# Print out. |
259
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foreach my $snak (@{$snaks_ar}) { |
260
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print 'Property: '.$snak->property."\n"; |
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print 'Type: '.$snak->datatype."\n"; |
262
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print 'Value: '.$snak->datavalue->value."\n"; |
263
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print "\n"; |
264
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} |
265
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266
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# Output: |
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# Property: P31 |
268
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# Type: wikibase-item |
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# Value: Q5 |
270
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# |
271
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# Property: P2534 |
272
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# Type: math |
273
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# Value: E = m c^2 |
274
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# |
275
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276
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=head1 DEPENDENCIES |
277
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278
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L<Error::Pure>, |
279
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L<Exporter>, |
280
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|
L<List::MoreUtils>. |
281
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282
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|
=head1 SEE ALSO |
283
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284
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|
=over |
285
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286
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|
|
=item L<Wikibase::Datatype::Struct> |
287
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|
288
|
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|
|
Wikibase structure serialization. |
289
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290
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|
=back |
291
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|
292
|
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|
|
=head1 REPOSITORY |
293
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|
|
294
|
|
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|
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|
|
L<https://github.com/michal-josef-spacek/Wikibase-Datatype-Struct> |
295
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296
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|
=head1 AUTHOR |
297
|
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|
|
|
298
|
|
|
|
|
|
|
Michal Josef Špaček L<mailto:skim@cpan.org> |
299
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|
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|
|
300
|
|
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|
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|
L<http://skim.cz> |
301
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302
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|
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|
|
=head1 LICENSE AND COPYRIGHT |
303
|
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|
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304
|
|
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|
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|
|
© Michal Josef Špaček 2020-2021 |
305
|
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|
|
306
|
|
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|
|
|
|
BSD 2-Clause License |
307
|
|
|
|
|
|
|
|
308
|
|
|
|
|
|
|
=head1 VERSION |
309
|
|
|
|
|
|
|
|
310
|
|
|
|
|
|
|
0.08 |
311
|
|
|
|
|
|
|
|
312
|
|
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|
|
|
|
=cut |