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14 <a name="package-MolecularDescriptors::MolecularDescriptors-"></a> 1 <span class="k">package </span><span class="i">MolecularDescriptors::MolecularDescriptors</span><span class="sc">;</span>
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15 2 <span class="c">#</span>
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16 3 <span class="c"># $RCSfile: MolecularDescriptors.pm,v $</span>
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17 4 <span class="c"># $Date: 2015/02/28 20:49:20 $</span>
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18 5 <span class="c"># $Revision: 1.14 $</span>
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19 6 <span class="c">#</span>
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20 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span>
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21 8 <span class="c">#</span>
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22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span>
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23 10 <span class="c">#</span>
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24 11 <span class="c"># This file is part of MayaChemTools.</span>
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25 12 <span class="c">#</span>
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26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span>
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27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span>
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28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span>
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29 16 <span class="c"># later version.</span>
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30 17 <span class="c">#</span>
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31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span>
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32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span>
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33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span>
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34 21 <span class="c"># details.</span>
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35 22 <span class="c">#</span>
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36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span>
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37 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span>
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38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span>
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39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span>
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40 27 <span class="c">#</span>
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41 28
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42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span>
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43 30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span>
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44 31 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span>
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45 32 <span class="k">use</span> <span class="w">Scalar::Util</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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46 33 <span class="k">use</span> <span class="w">ObjectProperty</span><span class="sc">;</span>
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47 34 <span class="k">use</span> <span class="w">TextUtil</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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48 35
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49 36 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span>
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50 37
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51 38 <span class="i">@ISA</span> = <span class="q">qw(ObjectProperty Exporter)</span><span class="sc">;</span>
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52 39 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span>
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53 40 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span>
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54 41
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55 42 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=></span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span><span class="s">)</span><span class="sc">;</span>
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56 43
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57 44 <span class="c"># Setup class variables...</span>
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58 45 <span class="k">my</span><span class="s">(</span><span class="i">$ClassName</span><span class="s">)</span><span class="sc">;</span>
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59 46 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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60 47
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61 48 <span class="c"># Class constructor...</span>
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62 <a name="new-"></a> 49 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span>
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63 50 <span class="k">my</span><span class="s">(</span><span class="i">$Class</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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64 51
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65 52 <span class="c"># Initialize object...</span>
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66 53 <span class="k">my</span> <span class="i">$This</span> = <span class="s">{</span><span class="s">}</span><span class="sc">;</span>
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67 54 <span class="k">bless</span> <span class="i">$This</span><span class="cm">,</span> <span class="k">ref</span><span class="s">(</span><span class="i">$Class</span><span class="s">)</span> || <span class="i">$Class</span><span class="sc">;</span>
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68 55 <span class="i">$This</span><span class="i">->_InitializeMolecularDescriptors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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69 56
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70 57 <span class="i">$This</span><span class="i">->_InitializeMolecularDescriptorsProperties</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span>
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71 58
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72 59 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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73 60 <span class="s">}</span>
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74 61
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75 62 <span class="c"># Initialize object data...</span>
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76 63 <span class="c">#</span>
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77 <a name="_InitializeMolecularDescriptors-"></a> 64 <span class="k">sub </span><span class="m">_InitializeMolecularDescriptors</span> <span class="s">{</span>
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78 65 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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79 66
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80 67 <span class="c"># Molecule object...</span>
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81 68 <span class="i">$This</span>->{<span class="w">Molecule</span>} = <span class="q">''</span><span class="sc">;</span>
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82 69
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83 70 <span class="c"># Type of molecular descriptors...</span>
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84 71 <span class="i">$This</span>->{<span class="w">Type</span>} = <span class="q">''</span><span class="sc">;</span>
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85 72
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86 73 <span class="c"># Names and calculated value of molecular descriptors...</span>
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87 74 <span class="c">#</span>
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88 75 <span class="c"># The specific descriptor class, derived from this base class, populate descriptor names and values</span>
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89 76 <span class="c"># arrays...</span>
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90 77 <span class="c">#</span>
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91 78 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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92 79 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorValues</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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93 80
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94 81 <span class="c"># Marks successful generation of descriptors...</span>
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95 82 <span class="i">$This</span>->{<span class="w">DescriptorsGenerated</span>} = <span class="n">0</span><span class="sc">;</span>
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96 83
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97 84 <span class="s">}</span>
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98 85
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99 86 <span class="c"># Initialize class ...</span>
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100 <a name="_InitializeClass-"></a> 87 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span>
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101 88 <span class="c">#Class name...</span>
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102 89 <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span>
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103 90 <span class="s">}</span>
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104 91
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105 92
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106 93 <span class="c"># Initialize object properties....</span>
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107 <a name="_InitializeMolecularDescriptorsProperties-"></a> 94 <span class="k">sub </span><span class="m">_InitializeMolecularDescriptorsProperties</span> <span class="s">{</span>
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108 95 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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109 96
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110 97 <span class="k">my</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">$MethodName</span><span class="s">)</span><span class="sc">;</span>
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111 98 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="k">each</span> <span class="i">%NamesAndValues</span><span class="s">)</span> <span class="s">{</span>
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112 99 <span class="i">$MethodName</span> = <span class="q">"Set${Name}"</span><span class="sc">;</span>
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113 100 <span class="i">$This</span><span class="i">->$MethodName</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="sc">;</span>
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114 101 <span class="s">}</span>
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115 102
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116 103 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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117 104 <span class="s">}</span>
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118 105
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119 106 <span class="c"># Initialize descriptor names and values...</span>
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120 107 <span class="c">#</span>
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121 <a name="_InitializeDescriptorNamesAndValues-"></a> 108 <span class="k">sub </span><span class="m">_InitializeDescriptorNamesAndValues</span> <span class="s">{</span>
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122 109 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">@Names</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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123 110
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124 111 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}} = <span class="i">@Names</span><span class="sc">;</span>
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125 112
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126 113 <span class="i">$This</span><span class="i">->_InitializeDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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127 114
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128 115 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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129 116 <span class="s">}</span>
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130 117
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131 118 <span class="c"># Initialize descriptor values...</span>
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132 119 <span class="c">#</span>
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133 <a name="_InitializeDescriptorValues-"></a> 120 <span class="k">sub </span><span class="m">_InitializeDescriptorValues</span> <span class="s">{</span>
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134 121 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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135 122
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136 123 <span class="i">$This</span>->{<span class="w">DescriptorsGenerated</span>} = <span class="n">0</span><span class="sc">;</span>
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137 124
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138 125 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorValues</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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139 126
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140 127 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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141 128 <span class="s">}</span>
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142 129
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143 130 <span class="c"># Set molecule object...</span>
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144 131 <span class="c">#</span>
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145 <a name="SetMolecule-"></a> 132 <span class="k">sub </span><span class="m">SetMolecule</span> <span class="s">{</span>
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146 133 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Molecule</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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147 134
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148 135 <span class="i">$This</span>->{<span class="w">Molecule</span>} = <span class="i">$Molecule</span><span class="sc">;</span>
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149 136
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150 137 <span class="c"># Weaken the reference to disable increment of reference count...</span>
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151 138 <span class="i">Scalar::Util::weaken</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">Molecule</span>}<span class="s">)</span><span class="sc">;</span>
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152 139
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153 140 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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154 141 <span class="s">}</span>
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155 142
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156 143 <span class="c"># Set type and make sure it's not already set...</span>
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157 144 <span class="c">#</span>
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158 <a name="SetType-"></a> 145 <span class="k">sub </span><span class="m">SetType</span> <span class="s">{</span>
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159 146 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Type</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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160 147
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161 148 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Type</span>}<span class="s">)</span> <span class="s">{</span>
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162 149 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->SetType: Can't change MolecularDescriptors type: It's already set..."</span><span class="sc">;</span>
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163 150 <span class="s">}</span>
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164 151 <span class="i">$This</span>->{<span class="w">Type</span>} = <span class="i">$Type</span><span class="sc">;</span>
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165 152
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166 153 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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167 154 <span class="s">}</span>
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168 155
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169 156 <span class="c"># Get molecular descriptor names as an array...</span>
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170 157 <span class="c">#</span>
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171 <a name="GetDescriptorNames-"></a> 158 <span class="k">sub </span><span class="m">GetDescriptorNames</span> <span class="s">{</span>
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172 159 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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173 160
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174 161 <span class="k">return</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}}<span class="sc">;</span>
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175 162 <span class="s">}</span>
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176 163
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177 164 <span class="c"># Set descriptor names...</span>
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178 165 <span class="c">#</span>
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179 <a name="SetDescriptorNames-"></a> 166 <span class="k">sub </span><span class="m">SetDescriptorNames</span> <span class="s">{</span>
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180 167 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">@Names</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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181 168
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182 169 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}} = <span class="i">@Names</span><span class="sc">;</span>
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183 170
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184 171 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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185 172 <span class="s">}</span>
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186 173
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187 174 <span class="c"># Add descriptor names...</span>
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188 175 <span class="c">#</span>
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189 <a name="AddDescriptorNames-"></a> 176 <span class="k">sub </span><span class="m">AddDescriptorNames</span> <span class="s">{</span>
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190 177 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">@Names</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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191 178
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192 179 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}}<span class="cm">,</span> <span class="i">@Names</span><span class="sc">;</span>
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193 180
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194 181 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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195 182 <span class="s">}</span>
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196 183
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197 184 <span class="c"># Set descriptor values...</span>
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198 185 <span class="c">#</span>
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199 <a name="SetDescriptorValues-"></a> 186 <span class="k">sub </span><span class="m">SetDescriptorValues</span> <span class="s">{</span>
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200 187 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">@Values</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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201 188
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202 189 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorValues</span>}} = <span class="i">@Values</span><span class="sc">;</span>
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203 190
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204 191 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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205 192 <span class="s">}</span>
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206 193
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207 194 <span class="c"># Add descriptor values...</span>
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208 195 <span class="c">#</span>
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209 <a name="AddDescriptorValues-"></a> 196 <span class="k">sub </span><span class="m">AddDescriptorValues</span> <span class="s">{</span>
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210 197 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">@Values</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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211 198
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212 199 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorValues</span>}}<span class="cm">,</span> <span class="i">@Values</span><span class="sc">;</span>
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213 200
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214 201 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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215 202 <span class="s">}</span>
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216 203
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217 204 <span class="c"># Is descriptors generation successful?</span>
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218 205 <span class="c">#</span>
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219 206 <span class="c"># Notes:</span>
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220 207 <span class="c"># . The specific molecular descriptor class generation class sets the value of</span>
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221 208 <span class="c"># DescriptorsCalculated to 1 after the successful generation of descriptors;</span>
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222 209 <span class="c"># otherwise, it's set to 0.</span>
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223 210 <span class="c">#</span>
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224 <a name="IsDescriptorsGenerationSuccessful-"></a> 211 <span class="k">sub </span><span class="m">IsDescriptorsGenerationSuccessful</span> <span class="s">{</span>
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225 212 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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226 213
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227 214 <span class="k">return</span> <span class="i">$This</span>->{<span class="w">DescriptorsGenerated</span>} ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span>
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228 215 <span class="s">}</span>
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229 216
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230 217 <span class="c"># Get all descriptor values as an array...</span>
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231 218 <span class="c">#</span>
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232 <a name="GetDescriptorValues-"></a> 219 <span class="k">sub </span><span class="m">GetDescriptorValues</span> <span class="s">{</span>
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233 220 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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234 221
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235 222 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">DescriptorsGenerated</span>}<span class="s">)</span> <span class="s">{</span>
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236 223 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorValues</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorValues</span>}}<span class="sc">;</span>
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237 224 <span class="s">}</span>
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238 225 <span class="k">else</span> <span class="s">{</span>
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239 226 <span class="k">my</span><span class="s">(</span><span class="i">@DescriptorValues</span><span class="s">)</span><span class="sc">;</span>
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240 227
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241 228 <span class="i">@DescriptorValues</span> = <span class="s">(</span><span class="q">'None'</span><span class="s">)</span> x <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}}<span class="sc">;</span>
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242 229
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243 230 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@DescriptorValues</span> <span class="co">:</span> <span class="k">scalar</span> <span class="i">@DescriptorValues</span><span class="sc">;</span>
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244 231 <span class="s">}</span>
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245 232 <span class="s">}</span>
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246 233
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247 234 <span class="c"># Get descriptor value for a specified descriptor name...</span>
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248 235 <span class="c">#</span>
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249 <a name="GetDescriptorValueByName-"></a> 236 <span class="k">sub </span><span class="m">GetDescriptorValueByName</span> <span class="s">{</span>
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250 237 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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251 238 <span class="k">my</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span>
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252 239
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253 240 <span class="i">%NamesAndValues</span> = <span class="i">$This</span><span class="i">->GetDescriptorNamesAndValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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254 241
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255 242 <span class="k">return</span> <span class="k">exists</span> <span class="i">$NamesAndValues</span>{<span class="i">$Name</span>} ? <span class="i">$NamesAndValues</span>{<span class="i">$Name</span>} <span class="co">:</span> <span class="q">'None'</span><span class="sc">;</span>
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256 243
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257 244 <span class="s">}</span>
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258 245
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259 246 <span class="c"># Get calculated molecular descriptor names sand values as a to a hash with names</span>
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260 247 <span class="c"># and values as key/value pairs...</span>
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261 248 <span class="c">#</span>
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262 <a name="GetDescriptorNamesAndValues-"></a> 249 <span class="k">sub </span><span class="m">GetDescriptorNamesAndValues</span> <span class="s">{</span>
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263 250 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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264 251 <span class="k">my</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span>
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265 252
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266 253 <span class="i">%NamesAndValues</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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267 254 <span class="i">@NamesAndValues</span>{ <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}} } = <span class="i">$This</span><span class="i">->GetDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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268 255
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269 256 <span class="k">return</span> <span class="i">%NamesAndValues</span><span class="sc">;</span>
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270 257 <span class="s">}</span>
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271 258
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272 259 <span class="c"># Return a string containing descriptor names and values...</span>
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273 260 <span class="c">#</span>
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274 <a name="_StringifyDescriptorNamesAndValues-"></a> 261 <span class="k">sub </span><span class="m">_StringifyDescriptorNamesAndValues</span> <span class="s">{</span>
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275 262 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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276 263 <span class="k">my</span><span class="s">(</span><span class="i">$NamesAndValuesString</span><span class="cm">,</span> <span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">@NamesAndValuesInfo</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span>
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277 264
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278 265 <span class="i">@NamesAndValuesInfo</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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279 266 <span class="i">%NamesAndValues</span> = <span class="i">$This</span><span class="i">->GetDescriptorNamesAndValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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280 267
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281 268 <span class="k">for</span> <span class="i">$Name</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">DescriptorNames</span>}}<span class="s">)</span> <span class="s">{</span>
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282 269 <span class="i">$Value</span> = <span class="i">$NamesAndValues</span>{<span class="i">$Name</span>}<span class="sc">;</span>
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283 270 <span class="i">$Value</span> = <span class="s">(</span><span class="i">TextUtil::IsEmpty</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span> || <span class="i">$Value</span> =~ <span class="q">/^None$/i</span><span class="s">)</span> ? <span class="q">'None'</span> <span class="co">:</span> <span class="i">$Value</span><span class="sc">;</span>
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284 271 <span class="k">push</span> <span class="i">@NamesAndValuesInfo</span><span class="cm">,</span> <span class="q">"$Name - $Value"</span><span class="sc">;</span>
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285 272 <span class="s">}</span>
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286 273 <span class="k">if</span> <span class="s">(</span><span class="i">@NamesAndValuesInfo</span><span class="s">)</span> <span class="s">{</span>
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287 274 <span class="i">$NamesAndValuesString</span> = <span class="q">"Names - Values: <"</span> . <span class="i">TextUtil::JoinWords</span><span class="s">(</span>\<span class="i">@NamesAndValuesInfo</span><span class="cm">,</span> <span class="q">", "</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span> . <span class="q">">"</span><span class="sc">;</span>
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288 275 <span class="s">}</span>
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289 276 <span class="k">else</span> <span class="s">{</span>
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290 277 <span class="i">$NamesAndValuesString</span> = <span class="q">"Names - Values: < None>"</span><span class="sc">;</span>
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291 278 <span class="s">}</span>
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292 279 <span class="k">return</span> <span class="i">$NamesAndValuesString</span><span class="sc">;</span>
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293 280 <span class="s">}</span>
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294 281
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295 <a name="EOF-"></a></pre>
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296 <p> </p>
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297 <br />
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298 <center>
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299 <img src="../../../images/h2o2.png">
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300 </center>
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301 </body>
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302 </html>
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