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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">&=</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 <boost/gregorian/date.hpp> | |
47 | </span><span class="comment">// and a few lines of adapter code. | |
48 | </span><span class="preprocessor">#include</span> <span class="special"><</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">></span> | |
49 | <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> | |
50 | <span class="preprocessor">#include</span> <span class="special"><</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">></span> | |
51 | <span class="preprocessor">#include</span> <span class="special"><</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">></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"><</span><span class="identifier">date</span><span class="special">></span> <span class="identifier">weekends</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">discrete_interval</span><span class="special"><</span><span class="identifier">date</span><span class="special">>&</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"><</span><span class="identifier">date</span><span class="special">></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"><=</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"><</span><span class="identifier">date</span><span class="special">>::</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">&=</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"><</span><span class="identifier">date</span><span class="special">></span> <span class="identifier">scope</span> <span class="special">=</span> <span class="identifier">discrete_interval</span><span class="special"><</span><span class="identifier">date</span><span class="special">>::</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"><</span><span class="identifier">date</span><span class="special">></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"><</span><span class="identifier">date</span><span class="special">>::</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"><</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">></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">&=</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"><</span><span class="identifier">date</span><span class="special">></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"><</span><span class="identifier">date</span><span class="special">></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"><</span><span class="identifier">date</span><span class="special">></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"><</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">></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">&=</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"><</span><span class="identifier">date</span><span class="special">></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"><</span><span class="identifier">date</span><span class="special">></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"><</span><span class="identifier">date</span><span class="special">></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"><</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">></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"><<</span> <span class="identifier">first</span><span class="special">(</span><span class="identifier">scope</span><span class="special">)</span> <span class="special"><<</span> <span class="string">" - "</span> <span class="special"><<</span> <span class="identifier">last</span><span class="special">(</span><span class="identifier">scope</span><span class="special">)</span> | |
166 | <span class="special"><<</span> <span class="string">" available man-power:"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> | |
167 | <span class="identifier">cout</span> <span class="special"><<</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"><</span><span class="identifier">date</span><span class="special">,</span><span class="keyword">int</span><span class="special">>::</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"><<</span> <span class="identifier">first</span><span class="special">(</span><span class="identifier">it</span><span class="special">-></span><span class="identifier">first</span><span class="special">)</span> <span class="special"><<</span> <span class="string">" - "</span> <span class="special"><<</span> <span class="identifier">last</span><span class="special">(</span><span class="identifier">it</span><span class="special">-></span><span class="identifier">first</span><span class="special">)</span> | |
173 | <span class="special"><<</span> <span class="string">" -> "</span> <span class="special"><<</span> <span class="identifier">it</span><span class="special">-></span><span class="identifier">second</span> <span class="special"><<</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"><<</span> <span class="string">">>Interval Container Library: Sample man_power.cpp <<\n"</span><span class="special">;</span> | |
180 | <span class="identifier">cout</span> <span class="special"><<</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 | >>Interval Container Library: Sample man_power.cpp << | |
188 | --------------------------------------------------------------- | |
189 | 2008-Aug-01 - 2008-Oct-31 available man-power: | |
190 | --------------------------------------------------------------- | |
191 | 2008-Aug-01 - 2008-Aug-01 -> 4 | |
192 | 2008-Aug-04 - 2008-Aug-08 -> 4 | |
193 | 2008-Aug-11 - 2008-Aug-14 -> 4 | |
194 | 2008-Aug-15 - 2008-Aug-15 -> 8 | |
195 | 2008-Aug-25 - 2008-Aug-29 -> 8 | |
196 | 2008-Sep-01 - 2008-Sep-03 -> 8 | |
197 | 2008-Sep-04 - 2008-Sep-05 -> 12 | |
198 | 2008-Sep-08 - 2008-Sep-12 -> 12 | |
199 | 2008-Sep-15 - 2008-Sep-15 -> 12 | |
200 | 2008-Sep-16 - 2008-Sep-18 -> 4 | |
201 | 2008-Sep-25 - 2008-Sep-26 -> 8 | |
202 | 2008-Sep-29 - 2008-Sep-29 -> 8 | |
203 | 2008-Sep-30 - 2008-Oct-02 -> 12 | |
204 | 2008-Oct-06 - 2008-Oct-10 -> 12 | |
205 | 2008-Oct-13 - 2008-Oct-17 -> 12 | |
206 | 2008-Oct-20 - 2008-Oct-24 -> 12 | |
207 | 2008-Oct-27 - 2008-Oct-31 -> 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 © 2007 -2010 Joachim Faulhaber<br>Copyright © 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> | |
221 | </div></td> | |
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