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  25 <div class="section boost_icl_examples_man_power" lang="en">
  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="boost_icl.examples.man_power"></a><a class="link" href="man_power.html" title="Man power">Man power</a>
  28 </h3></div></div></div>
  29 <p>
  30         <code class="computeroutput"><a class="link" href="../../boost/icl/interval_set.html" title="Class template interval_set">Interval_sets</a></code> and
  31         <code class="computeroutput"><a class="link" href="../../boost/icl/interval_map.html" title="Class template interval_map">interval_maps</a></code> can be
  32         filled and manipulated using set style operations such as union <code class="computeroutput"><span class="special">+=</span></code>, difference <code class="computeroutput"><span class="special">-=</span></code>
  33         and intersection <code class="computeroutput"><span class="special">&amp;=</span></code>.
  34       </p>
  35 <p>
  36         In this example <span class="bold"><strong>man power</strong></span> a number of those
  37         operations are demonstrated in the process of calculation the available working
  38         times (man-power) of a company's employees accounting for weekends, holidays,
  39         sickness times and vacations.
  40       </p>
  41 <p>
  42         </p>
  43 <p>
  44
  45 </p>
  46 <pre class="programlisting"><span class="comment">// The next line includes &lt;boost/gregorian/date.hpp&gt;
  47 </span><span class="comment">// and a few lines of adapter code.
  48 </span><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">gregorian</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  49 <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
  50 <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">discrete_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  51 <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">interval_map</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  52
  53 <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span>
  54 <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">gregorian</span><span class="special">;</span>
  55 <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">icl</span><span class="special">;</span>
  56
  57
  58 <span class="comment">// Function weekends returns the interval_set of weekends that are contained in
  59 </span><span class="comment">// the date interval 'scope'
  60 </span><span class="identifier">interval_set</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">weekends</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;&amp;</span> <span class="identifier">scope</span><span class="special">)</span>
  61 <span class="special">{</span>
  62     <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">weekends</span><span class="special">;</span>
  63
  64     <span class="identifier">date</span> <span class="identifier">cur_weekend_sat</span>
  65         <span class="special">=</span> <span class="identifier">first</span><span class="special">(</span><span class="identifier">scope</span><span class="special">)</span>
  66           <span class="special">+</span> <span class="identifier">days</span><span class="special">(</span><span class="identifier">days_until_weekday</span><span class="special">(</span><span class="identifier">first</span><span class="special">(</span><span class="identifier">scope</span><span class="special">),</span> <span class="identifier">greg_weekday</span><span class="special">(</span><span class="identifier">Saturday</span><span class="special">)))</span>
  67           <span class="special">-</span> <span class="identifier">weeks</span><span class="special">(</span><span class="number">1</span><span class="special">);</span>
  68     <span class="identifier">week_iterator</span> <span class="identifier">week_iter</span><span class="special">(</span><span class="identifier">cur_weekend_sat</span><span class="special">);</span>
  69
  70     <span class="keyword">for</span><span class="special">(;</span> <span class="identifier">week_iter</span> <span class="special">&lt;=</span> <span class="identifier">last</span><span class="special">(</span><span class="identifier">scope</span><span class="special">);</span> <span class="special">++</span><span class="identifier">week_iter</span><span class="special">)</span>
  71         <span class="identifier">weekends</span> <span class="special">+=</span> <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;::</span><span class="identifier">right_open</span><span class="special">(*</span><span class="identifier">week_iter</span><span class="special">,</span> <span class="special">*</span><span class="identifier">week_iter</span> <span class="special">+</span> <span class="identifier">days</span><span class="special">(</span><span class="number">2</span><span class="special">));</span>
  72
  73     <span class="identifier">weekends</span> <span class="special">&amp;=</span> <span class="identifier">scope</span><span class="special">;</span> <span class="comment">// cut off the surplus
  74 </span>
  75     <span class="keyword">return</span> <span class="identifier">weekends</span><span class="special">;</span>
  76 <span class="special">}</span>
  77
  78 <span class="comment">// The available working time for the employees of a company is calculated
  79 </span><span class="comment">// for a period of 3 months accounting for weekends and holidays.
  80 </span><span class="comment">//    The available daily working time for the employees is calculated
  81 </span><span class="comment">// using interval_sets and interval_maps demonstrating a number of
  82 </span><span class="comment">// addition, subtraction and intersection operations.
  83 </span><span class="keyword">void</span> <span class="identifier">man_power</span><span class="special">()</span>
  84 <span class="special">{</span>
  85     <span class="identifier">date</span> <span class="identifier">someday</span> <span class="special">=</span> <span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-08-01"</span><span class="special">);</span>
  86     <span class="identifier">date</span> <span class="identifier">thenday</span> <span class="special">=</span> <span class="identifier">someday</span> <span class="special">+</span> <span class="identifier">months</span><span class="special">(</span><span class="number">3</span><span class="special">);</span>
  87
  88     <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">scope</span> <span class="special">=</span> <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;::</span><span class="identifier">right_open</span><span class="special">(</span><span class="identifier">someday</span><span class="special">,</span> <span class="identifier">thenday</span><span class="special">);</span>
  89
  90     <span class="comment">// ------------------------------------------------------------------------
  91 </span>    <span class="comment">// (1) In a first step, the regular working times are computed for the
  92 </span>    <span class="comment">// company within the given scope. From all available days, the weekends
  93 </span>    <span class="comment">// and holidays have to be subtracted:
  94 </span>    <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">worktime</span><span class="special">(</span><span class="identifier">scope</span><span class="special">);</span>
  95     <span class="comment">// Subtract the weekends
  96 </span>    <span class="identifier">worktime</span> <span class="special">-=</span> <span class="identifier">weekends</span><span class="special">(</span><span class="identifier">scope</span><span class="special">);</span>
  97     <span class="comment">// Subtract holidays
  98 </span>    <span class="identifier">worktime</span> <span class="special">-=</span> <span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-10-03"</span><span class="special">);</span> <span class="comment">//German reunification ;)
  99 </span>
 100     <span class="comment">// company holidays (fictitious ;)
 101 </span>    <span class="identifier">worktime</span> <span class="special">-=</span> <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;::</span><span class="identifier">closed</span><span class="special">(</span><span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-08-18"</span><span class="special">),</span>
 102                                                 <span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-08-22"</span><span class="special">));</span>
 103
 104     <span class="comment">//-------------------------------------------------------------------------
 105 </span>    <span class="comment">// (2) Now we calculate the individual work times for some employees
 106 </span>    <span class="comment">//-------------------------------------------------------------------------
 107 </span>    <span class="comment">// In the company works Claudia.
 108 </span>    <span class="comment">// This is the map of her regular working times:
 109 </span>    <span class="identifier">interval_map</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">claudias_working_hours</span><span class="special">;</span>
 110
 111     <span class="comment">// Claudia is working 8 hours a day. So the next statement says
 112 </span>    <span class="comment">// that every day in the whole scope is mapped to 8 hours worktime.
 113 </span>    <span class="identifier">claudias_working_hours</span> <span class="special">+=</span> <span class="identifier">make_pair</span><span class="special">(</span><span class="identifier">scope</span><span class="special">,</span> <span class="number">8</span><span class="special">);</span>
 114
 115     <span class="comment">// But Claudia only works 8 hours on regular working days so we do
 116 </span>    <span class="comment">// an intersection of the interval_map with the interval_set worktime:
 117 </span>    <span class="identifier">claudias_working_hours</span> <span class="special">&amp;=</span> <span class="identifier">worktime</span><span class="special">;</span>
 118
 119     <span class="comment">// Yet, in addition Claudia has her own absence times like
 120 </span>    <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">claudias_seminar</span> <span class="special">(</span><span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-09-16"</span><span class="special">),</span>
 121                                               <span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-09-24"</span><span class="special">),</span>
 122                                               <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">closed</span><span class="special">());</span>
 123     <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">claudias_vacation</span><span class="special">(</span><span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-08-01"</span><span class="special">),</span>
 124                                               <span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-08-14"</span><span class="special">),</span>
 125                                               <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">closed</span><span class="special">());</span>
 126
 127     <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">claudias_absence_times</span><span class="special">(</span><span class="identifier">claudias_seminar</span><span class="special">);</span>
 128     <span class="identifier">claudias_absence_times</span> <span class="special">+=</span> <span class="identifier">claudias_vacation</span><span class="special">;</span>
 129
 130     <span class="comment">// All the absence times have to subtracted from the map of her working times
 131 </span>    <span class="identifier">claudias_working_hours</span> <span class="special">-=</span> <span class="identifier">claudias_absence_times</span><span class="special">;</span>
 132
 133     <span class="comment">//-------------------------------------------------------------------------
 134 </span>    <span class="comment">// Claudia's boss is Bodo. He only works part time.
 135 </span>    <span class="comment">// This is the map of his regular working times:
 136 </span>    <span class="identifier">interval_map</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">bodos_working_hours</span><span class="special">;</span>
 137
 138     <span class="comment">// Bodo is working 4 hours a day.
 139 </span>    <span class="identifier">bodos_working_hours</span> <span class="special">+=</span> <span class="identifier">make_pair</span><span class="special">(</span><span class="identifier">scope</span><span class="special">,</span> <span class="number">4</span><span class="special">);</span>
 140
 141     <span class="comment">// Bodo works only on regular working days
 142 </span>    <span class="identifier">bodos_working_hours</span> <span class="special">&amp;=</span> <span class="identifier">worktime</span><span class="special">;</span>
 143
 144     <span class="comment">// Bodos additional absence times
 145 </span>    <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span>      <span class="identifier">bodos_flu</span><span class="special">(</span><span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-09-19"</span><span class="special">),</span> <span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-09-29"</span><span class="special">),</span>
 146                                            <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">closed</span><span class="special">());</span>
 147     <span class="identifier">discrete_interval</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">bodos_vacation</span><span class="special">(</span><span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-08-15"</span><span class="special">),</span> <span class="identifier">from_string</span><span class="special">(</span><span class="string">"2008-09-03"</span><span class="special">),</span>
 148                                            <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">closed</span><span class="special">());</span>
 149
 150     <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">&gt;</span> <span class="identifier">bodos_absence_times</span><span class="special">(</span><span class="identifier">bodos_flu</span><span class="special">);</span>
 151     <span class="identifier">bodos_absence_times</span> <span class="special">+=</span> <span class="identifier">bodos_vacation</span><span class="special">;</span>
 152
 153     <span class="comment">// All the absence times have to be subtracted from the map of his working times
 154 </span>    <span class="identifier">bodos_working_hours</span> <span class="special">-=</span> <span class="identifier">bodos_absence_times</span><span class="special">;</span>
 155
 156     <span class="comment">//-------------------------------------------------------------------------
 157 </span>    <span class="comment">// (3) Finally we want to calculate the available manpower of the company
 158 </span>    <span class="comment">// for the selected time scope: This is done by adding up the employees
 159 </span>    <span class="comment">// working time maps:
 160 </span>    <span class="identifier">interval_map</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">manpower</span><span class="special">;</span>
 161     <span class="identifier">manpower</span> <span class="special">+=</span> <span class="identifier">claudias_working_hours</span><span class="special">;</span>
 162     <span class="identifier">manpower</span> <span class="special">+=</span> <span class="identifier">bodos_working_hours</span><span class="special">;</span>
 163
 164
 165     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">first</span><span class="special">(</span><span class="identifier">scope</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="string">" - "</span> <span class="special">&lt;&lt;</span> <span class="identifier">last</span><span class="special">(</span><span class="identifier">scope</span><span class="special">)</span>
 166          <span class="special">&lt;&lt;</span> <span class="string">"    available man-power:"</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
 167     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"---------------------------------------------------------------\n"</span><span class="special">;</span>
 168
 169     <span class="keyword">for</span><span class="special">(</span><span class="identifier">interval_map</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;::</span><span class="identifier">iterator</span> <span class="identifier">it</span> <span class="special">=</span> <span class="identifier">manpower</span><span class="special">.</span><span class="identifier">begin</span><span class="special">();</span>
 170         <span class="identifier">it</span> <span class="special">!=</span> <span class="identifier">manpower</span><span class="special">.</span><span class="identifier">end</span><span class="special">();</span> <span class="identifier">it</span><span class="special">++)</span>
 171     <span class="special">{</span>
 172         <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">first</span><span class="special">(</span><span class="identifier">it</span><span class="special">-&gt;</span><span class="identifier">first</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="string">" - "</span> <span class="special">&lt;&lt;</span> <span class="identifier">last</span><span class="special">(</span><span class="identifier">it</span><span class="special">-&gt;</span><span class="identifier">first</span><span class="special">)</span>
 173              <span class="special">&lt;&lt;</span> <span class="string">" -&gt; "</span> <span class="special">&lt;&lt;</span> <span class="identifier">it</span><span class="special">-&gt;</span><span class="identifier">second</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
 174     <span class="special">}</span>
 175 <span class="special">}</span>
 176
 177 <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
 178 <span class="special">{</span>
 179     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"&gt;&gt;Interval Container Library: Sample man_power.cpp &lt;&lt;\n"</span><span class="special">;</span>
 180     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"---------------------------------------------------------------\n"</span><span class="special">;</span>
 181     <span class="identifier">man_power</span><span class="special">();</span>
 182     <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
 183 <span class="special">}</span>
 184
 185 <span class="comment">// Program output:
 186 </span><span class="comment">/*
 187 &gt;&gt;Interval Container Library: Sample man_power.cpp &lt;&lt;
 188 ---------------------------------------------------------------
 189 2008-Aug-01 - 2008-Oct-31    available man-power:
 190 ---------------------------------------------------------------
 191 2008-Aug-01 - 2008-Aug-01 -&gt; 4
 192 2008-Aug-04 - 2008-Aug-08 -&gt; 4
 193 2008-Aug-11 - 2008-Aug-14 -&gt; 4
 194 2008-Aug-15 - 2008-Aug-15 -&gt; 8
 195 2008-Aug-25 - 2008-Aug-29 -&gt; 8
 196 2008-Sep-01 - 2008-Sep-03 -&gt; 8
 197 2008-Sep-04 - 2008-Sep-05 -&gt; 12
 198 2008-Sep-08 - 2008-Sep-12 -&gt; 12
 199 2008-Sep-15 - 2008-Sep-15 -&gt; 12
 200 2008-Sep-16 - 2008-Sep-18 -&gt; 4
 201 2008-Sep-25 - 2008-Sep-26 -&gt; 8
 202 2008-Sep-29 - 2008-Sep-29 -&gt; 8
 203 2008-Sep-30 - 2008-Oct-02 -&gt; 12
 204 2008-Oct-06 - 2008-Oct-10 -&gt; 12
 205 2008-Oct-13 - 2008-Oct-17 -&gt; 12
 206 2008-Oct-20 - 2008-Oct-24 -&gt; 12
 207 2008-Oct-27 - 2008-Oct-31 -&gt; 12
 208 */</span>
 209 </pre>
 210 <p>
 211         </p>
 212 <p>
 213       </p>
 214 </div>
 215 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 216 <td align="left"></td>
 217 <td align="right"><div class="copyright-footer">Copyright &#169; 2007 -2010 Joachim Faulhaber<br>Copyright &#169; 1999 -2006 Cortex Software GmbH<p>
 218         Distributed under the Boost Software License, Version 1.0. (See accompanying
 219         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 220       </p>
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