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3 <title>MayaChemTools:Documentation:PseudoHeap.pm</title>
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15 <tr align="left" valign="top"><td width="33%" align="left"><a href="./PeriodicTable.html" title="PeriodicTable.html">Previous</a>&nbsp;&nbsp;<a href="./index.html" title="Table of Contents">TOC</a>&nbsp;&nbsp;<a href="./SDFileUtil.html" title="SDFileUtil.html">Next</a></td><td width="34%" align="middle"><strong>PseudoHeap.pm</strong></td><td width="33%" align="right"><a href="././code/PseudoHeap.html" title="View source code">Code</a>&nbsp;|&nbsp;<a href="./../pdf/PseudoHeap.pdf" title="PDF US Letter Size">PDF</a>&nbsp;|&nbsp;<a href="./../pdfgreen/PseudoHeap.pdf" title="PDF US Letter Size with narrow margins: www.changethemargins.com">PDFGreen</a>&nbsp;|&nbsp;<a href="./../pdfa4/PseudoHeap.pdf" title="PDF A4 Size">PDFA4</a>&nbsp;|&nbsp;<a href="./../pdfa4green/PseudoHeap.pdf" title="PDF A4 Size with narrow margins: www.changethemargins.com">PDFA4Green</a></td></tr>
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18 <p>
19 </p>
20 <h2>NAME</h2>
21 <p>PseudoHeap</p>
22 <p>
23 </p>
24 <h2>SYNOPSIS</h2>
25 <p>use PseudoHeap;</p>
26 <p>use PseudoHeap qw(:all);</p>
27 <p>
28 </p>
29 <h2>DESCRIPTION</h2>
30 <p><strong>PseudoHeap</strong> class provides the following methods:</p>
31 <p> <a href="#new">new</a>, <a href="#addkeyvaluepair">AddKeyValuePair</a>, <a href="#addkeyvaluepairs">AddKeyValuePairs</a>, <a href="#deletekey">DeleteKey</a>, <a href="#deletekeys">DeleteKeys</a>, <a href="#deletemaxkey">DeleteMaxKey</a>
32 , <a href="#deleteminkey">DeleteMinKey</a>, <a href="#getcurrentsize">GetCurrentSize</a>, <a href="#getkeytype">GetKeyType</a>, <a href="#getkeyvalues">GetKeyValues</a>, <a href="#getkeys">GetKeys</a>, <a href="#getmaxkey">GetMaxKey</a>
33 , <a href="#getmaxsize">GetMaxSize</a>, <a href="#getminkey">GetMinKey</a>, <a href="#getsortedkeys">GetSortedKeys</a>, <a href="#gettype">GetType</a>, <a href="#setkeytype">SetKeyType</a>, <a href="#setmaxsize">SetMaxSize</a>, <a href="#settype">SetType</a>
34 , <a href="#stringifypseudoheap">StringifyPseudoHeap</a>
35 </p><p>PseudoHeap is designed to support tracking of a specific number of largest or smallest key/value
36 pairs with numeric or alphanumeric keys along with corresponding scalar or reference values.</p>
37 <p>Although PseudoHeap is conceptually similar to a heap, it lacks number of key properties of a traditional
38 heap data structure: no concept of root, parent and child nodes; no ordering of keys in any particular
39 order; no specific location greatest or smallest key.</p>
40 <p>The keys are simply stored in a hash with each key pointing to an array containing specified values.
41 The min/max keys are updated during addition and deletion of key/value pairs; these can be retrieved
42 by accessing corresponding hash.</p>
43 <p>Addition and deletion of key/value is also straightforward using hashes. However, min/max keys
44 need to be identified which is done using Perl sort function on the keys.</p>
45 <p>
46 </p>
47 <h2>FUNCTIONS</h2>
48 <dl>
49 <dt><strong><a name="new" class="item"><strong>new</strong></a></strong></dt>
50 <dd>
51 <div class="OptionsBox">
52 $NewPseudoHeap = new PseudoHeap(%NamesAndValues);</div>
53 <p>Using specified parameters <em>NamesAndValues</em> names and values hash, <strong>new</strong> method creates
54 a new object and returns a reference to a newly created <strong>NewPseudoHeap</strong> object. By default,
55 the following property names are initialized:</p>
56 <div class="OptionsBox">
57 Type = undef;
58 <br/> KeyType = undef;
59 <br/> MaxSize = 10;</div>
60 <p>Examples:</p>
61 <div class="OptionsBox">
62 $NewPseudoHeap = new PseudoHeap(
63 'Type' =&gt; 'KeepTopN',
64 'KeyType' =&gt; 'Numeric');</div>
65 <div class="OptionsBox">
66 $NewPseudoHeap = new PseudoHeap(
67 'Type' =&gt; 'KeepTopN',
68 'KeyType' =&gt; 'AlphaNumeric',
69 'MaxSize' =&gt; '20');</div>
70 <div class="OptionsBox">
71 $NewPseudoHeap = new PseudoHeap(
72 'Type' =&gt; 'KeepBottomN',
73 'KeyType' =&gt; 'AlphaNumeric',
74 'MaxSize' =&gt; '20');</div>
75 </dd>
76 <dt><strong><a name="addkeyvaluepair" class="item"><strong>AddKeyValuePair</strong></a></strong></dt>
77 <dd>
78 <div class="OptionsBox">
79 $PseudoHeap-&gt;AddKeyValuePair($Key, $Value);</div>
80 <p>Add specified <em>Key</em> and <em>Value</em> pair to pseudo heap using a new or an existing
81 key and returns <strong>PseudoHeap</strong>.</p>
82 </dd>
83 <dt><strong><a name="addkeyvaluepairs" class="item"><strong>AddKeyValuePairs</strong></a></strong></dt>
84 <dd>
85 <div class="OptionsBox">
86 $PseudoHeap-&gt;AddKeyValuePairs(@KeyValuePairs);</div>
87 <p>Adds multiple key and value pairs specified in array <em>KeyValuePairs</em> to pseudo heap
88 using a new or existing keys and returns <strong>PseudoHeap</strong>.</p>
89 </dd>
90 <dt><strong><a name="deletekey" class="item"><strong>DeleteKey</strong></a></strong></dt>
91 <dd>
92 <div class="OptionsBox">
93 $PseudoHeap-&gt;DeleteKey($Key);</div>
94 <p>Deletes a specified <em>Key</em> from pseudo heap and returns <strong>PseudoHeap</strong>.</p>
95 </dd>
96 <dt><strong><a name="deletekeys" class="item"><strong>DeleteKeys</strong></a></strong></dt>
97 <dd>
98 <div class="OptionsBox">
99 $PseudoHeap-&gt;DeleteKeys(@Keys);</div>
100 <p>Deletes a specified <em>Keys</em> from pseudo heap and returns <strong>PseudoHeap</strong>.</p>
101 </dd>
102 <dt><strong><a name="deletemaxkey" class="item"><strong>DeleteMaxKey</strong></a></strong></dt>
103 <dd>
104 <div class="OptionsBox">
105 $PseudoHeap-&gt;DeleteMaxKey();</div>
106 <p>Deletes a <em>MaxKey</em> along with its associated values from pseudo heap and returns
107 <strong>PseudoHeap</strong>.</p>
108 </dd>
109 <dt><strong><a name="deleteminkey" class="item"><strong>DeleteMinKey</strong></a></strong></dt>
110 <dd>
111 <div class="OptionsBox">
112 $PseudoHeap-&gt;DeleteMinKey();</div>
113 <p>Deletes a <em>MinKey</em> along with its associated values from pseudo heap and returns
114 <strong>PseudoHeap</strong>.</p>
115 </dd>
116 <dt><strong><a name="getcurrentsize" class="item"><strong>GetCurrentSize</strong></a></strong></dt>
117 <dd>
118 <div class="OptionsBox">
119 $Size = $PseudoHeap-&gt;GetCurrentSize();</div>
120 <p>Returns current <em>Size</em> of pseudo heap corresponding to number to keys in heap.</p>
121 </dd>
122 <dt><strong><a name="getkeytype" class="item"><strong>GetKeyType</strong></a></strong></dt>
123 <dd>
124 <div class="OptionsBox">
125 $KeyType = $PseudoHeap-&gt;GetKeyType();</div>
126 <p>Returns <em>KeyType</em> of pseudo heap. Possible <strong>KeyType</strong> values: <em>Numeric or Alphanumeric</em>.</p>
127 </dd>
128 <dt><strong><a name="getkeyvalues" class="item"><strong>GetKeyValues</strong></a></strong></dt>
129 <dd>
130 <div class="OptionsBox">
131 @Values = $PseudoHeap-&gt;GetKeyValues($Key);
132 <br/> $NumOfValues = $PseudoHeap-&gt;GetKeyValues($Key);</div>
133 <p>Returns an array containing <strong>Values</strong> associated with a specified <em>Key</em> in pseudo heap. In
134 scalar context, it returns number of values associated with a key.</p>
135 </dd>
136 <dt><strong><a name="getkeys" class="item"><strong>GetKeys</strong></a></strong></dt>
137 <dd>
138 <div class="OptionsBox">
139 @Keys = $PseudoHeap-&gt;GetKeys();
140 <br/> $NumOfKeys = $PseudoHeap-&gt;GetKeys();</div>
141 <p>Returns an array containing all <strong>Keys</strong> in pseudo heap. In scalar context, it returns total
142 number of keys.</p>
143 </dd>
144 <dt><strong><a name="getmaxkey" class="item"><strong>GetMaxKey</strong></a></strong></dt>
145 <dd>
146 <div class="OptionsBox">
147 $MaxKey = $PseudoHeap-&gt;GetMaxKey();</div>
148 <p>Returns <em>MaxKey</em> present in pseudo heap.</p>
149 </dd>
150 <dt><strong><a name="getmaxsize" class="item"><strong>GetMaxSize</strong></a></strong></dt>
151 <dd>
152 <div class="OptionsBox">
153 $MaxSize = $PseudoHeap-&gt;GetMaxSize();</div>
154 <p>Returns <em>MaxSize</em> of pseudo heap.</p>
155 </dd>
156 <dt><strong><a name="getminkey" class="item"><strong>GetMinKey</strong></a></strong></dt>
157 <dd>
158 <div class="OptionsBox">
159 $MinKey = $PseudoHeap-&gt;GetMinKey();</div>
160 <p>Returns <em>MinKey</em> present in pseudo heap.</p>
161 </dd>
162 <dt><strong><a name="getsortedkeys" class="item"><strong>GetSortedKeys</strong></a></strong></dt>
163 <dd>
164 <div class="OptionsBox">
165 @Keys = $PseudoHeap-&gt;GetSortedKeys();
166 <br/> $NumOfKeys = $PseudoHeap-&gt;GetSortedKeys();</div>
167 <p>Returns an array containing all sorted <strong>Keys</strong> in pseudo heap. In scalar context, it retruns
168 total number of keys.</p>
169 <p>Keys are sorted based on values of <strong>Type</strong> and <strong>KeyType</strong> for pseudo heap:</p>
170 <div class="OptionsBox">
171 Type KeyType SortOrder SortOperator
172 <br/> KeepTopN Numeric Descending &lt;=&gt;
173 <br/> KeepTopN Alphanumeric Descending cmp
174 <br/> KeepBottomN Numeric Ascending &lt;=&gt;
175 <br/> KeepBottomN Alphanumeric Ascending cmp</div>
176 </dd>
177 <dt><strong><a name="gettype" class="item"><strong>GetType</strong></a></strong></dt>
178 <dd>
179 <div class="OptionsBox">
180 $Type = $PseudoHeap-&gt;GetType();</div>
181 <p>Returns <em>Type</em> of pseudo heap.</p>
182 </dd>
183 <dt><strong><a name="setkeytype" class="item"><strong>SetKeyType</strong></a></strong></dt>
184 <dd>
185 <div class="OptionsBox">
186 $PseudoHeap-&gt;SetKeyType($KeyType);</div>
187 <p>Sets <em>KeyType</em> of pseudo heap and returns <strong>PseudoHeap</strong>.</p>
188 </dd>
189 <dt><strong><a name="setmaxsize" class="item"><strong>SetMaxSize</strong></a></strong></dt>
190 <dd>
191 <div class="OptionsBox">
192 $PseudoHeap-&gt;SetMaxSize($MaxSize);</div>
193 <p>Sets <em>MaxSize</em> of pseudo heap and returns <strong>PseudoHeap</strong>.</p>
194 </dd>
195 <dt><strong><a name="settype" class="item"><strong>SetType</strong></a></strong></dt>
196 <dd>
197 <div class="OptionsBox">
198 $PseudoHeap-&gt;SetType($Type);</div>
199 <p>Sets <em>Type</em> of pseudo heap and returns <strong>PseudoHeap</strong>.</p>
200 </dd>
201 <dt><strong><a name="stringifypseudoheap" class="item"><strong>StringifyPseudoHeap</strong></a></strong></dt>
202 <dd>
203 <div class="OptionsBox">
204 $PseudoHeapString = $PseudoHeap-&gt;StringifyPseudoHeap();</div>
205 <p>Returns a string containing information about <em>PseudoHeap</em> object</p>
206 </dd>
207 </dl>
208 <p>
209 </p>
210 <h2>AUTHOR</h2>
211 <p><a href="mailto:msud@san.rr.com">Manish Sud</a></p>
212 <p>
213 </p>
214 <h2>COPYRIGHT</h2>
215 <p>Copyright (C) 2015 Manish Sud. All rights reserved.</p>
216 <p>This file is part of MayaChemTools.</p>
217 <p>MayaChemTools is free software; you can redistribute it and/or modify it under
218 the terms of the GNU Lesser General Public License as published by the Free
219 Software Foundation; either version 3 of the License, or (at your option)
220 any later version.</p>
221 <p>&nbsp</p><p>&nbsp</p><div class="DocNav">
222 <table width="100%" border=0 cellpadding=0 cellspacing=2>
223 <tr align="left" valign="top"><td width="33%" align="left"><a href="./PeriodicTable.html" title="PeriodicTable.html">Previous</a>&nbsp;&nbsp;<a href="./index.html" title="Table of Contents">TOC</a>&nbsp;&nbsp;<a href="./SDFileUtil.html" title="SDFileUtil.html">Next</a></td><td width="34%" align="middle"><strong>March 29, 2015</strong></td><td width="33%" align="right"><strong>PseudoHeap.pm</strong></td></tr>
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