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<div class="titlepage"><div><div><h3 class="title">
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<a name="boost_icl.examples.static_interval"></a><a class="link" href="static_interval.html" title="Static interval">Static interval</a>
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</h3></div></div></div>
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<p>
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</p>
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<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">math</span><span class="special">.</span><span class="identifier">h</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">is_same</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="comment">// We can change the library default for the interval types by defining </span>
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<span class="preprocessor">#define</span> <span class="identifier">BOOST_ICL_USE_STATIC_BOUNDED_INTERVALS</span>
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<span class="comment">// prior to other inluces from the icl.</span>
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<span class="comment">// The interval type that is automatically used with interval</span>
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<span class="comment">// containers then is the statically bounded right_open_interval.</span>
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<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_set</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<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">split_interval_set</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="comment">// The statically bounded interval type 'right_open_interval'</span>
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<span class="comment">// is indirectly included via interval containers.</span>
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<span class="preprocessor">#include</span> <span class="string">"../toytime.hpp"</span>
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<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">rational</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span>
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<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span>
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<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>
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<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
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<span class="special">{</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">">> Interval Container Library: Sample static_interval.cpp <<\n"</span><span class="special">;</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"------------------------------------------------------------\n"</span><span class="special">;</span>
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<span class="comment">// Statically bounded intervals are the user defined library default for </span>
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<span class="comment">// interval parameters in interval containers now.</span>
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<span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span>
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<span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special"><</span> <span class="identifier">interval_set</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">interval_type</span>
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<span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span>
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<span class="special">));</span>
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<span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span>
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<span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special"><</span> <span class="identifier">interval_set</span><span class="special"><</span><span class="keyword">float</span><span class="special">>::</span><span class="identifier">interval_type</span>
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<span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special"><</span><span class="keyword">float</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span>
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<span class="special">));</span>
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<span class="comment">// As we can see the library default both for discrete and continuous</span>
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<span class="comment">// domain_types T is 'right_open_interval<T>'.</span>
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<span class="comment">// The user defined library default for intervals is also available via </span>
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<span class="comment">// the template 'interval':</span>
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<span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span>
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<span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special"><</span> <span class="identifier">interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">type</span>
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<span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span>
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<span class="special">));</span>
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<span class="comment">// Again we are declaring and initializing the four test intervals that have been used</span>
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<span class="comment">// in the example 'interval' and 'dynamic_interval'</span>
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<span class="identifier">interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">int_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">right_open</span><span class="special">(</span><span class="number">3</span><span class="special">,</span> <span class="number">8</span><span class="special">);</span> <span class="comment">// shifted the upper bound</span>
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<span class="identifier">interval</span><span class="special"><</span><span class="keyword">double</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">sqrt_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="keyword">double</span><span class="special">>::</span><span class="identifier">right_open</span><span class="special">(</span><span class="number">1</span><span class="special">/</span><span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">),</span> <span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">));</span>
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<span class="comment">// Interval ("Barcelona", "Boston"] can not be represented because there is no 'steppable next' on</span>
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<span class="comment">// lower bound "Barcelona". Ok. this is a different interval:</span>
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<span class="identifier">interval</span><span class="special"><</span><span class="identifier">string</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">city_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="identifier">string</span><span class="special">>::</span><span class="identifier">right_open</span><span class="special">(</span><span class="string">"Barcelona"</span><span class="special">,</span> <span class="string">"Boston"</span><span class="special">);</span>
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<span class="comment">// Toy Time is discrete again so we can transfrom open(Time(monday,8,30), Time(monday,17,20))</span>
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<span class="comment">// to right_open(Time(monday,8,31), Time(monday,17,20))</span>
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<span class="identifier">interval</span><span class="special"><</span><span class="identifier">Time</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">time_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="identifier">Time</span><span class="special">>::</span><span class="identifier">right_open</span><span class="special">(</span><span class="identifier">Time</span><span class="special">(</span><span class="identifier">monday</span><span class="special">,</span><span class="number">8</span><span class="special">,</span><span class="number">31</span><span class="special">),</span> <span class="identifier">Time</span><span class="special">(</span><span class="identifier">monday</span><span class="special">,</span><span class="number">17</span><span class="special">,</span><span class="number">20</span><span class="special">));</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----- Statically bounded intervals ----------------------------------------\n"</span><span class="special">;</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"right_open_interval<int> : "</span> <span class="special"><<</span> <span class="identifier">int_interval</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"right_open_interval<double>: "</span> <span class="special"><<</span> <span class="identifier">sqrt_interval</span> <span class="special"><<</span> <span class="string">" does "</span>
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<span class="special"><<</span> <span class="identifier">string</span><span class="special">(</span><span class="identifier">contains</span><span class="special">(</span><span class="identifier">sqrt_interval</span><span class="special">,</span> <span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">))?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span>
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<span class="special"><<</span> <span class="string">" contain sqrt(2)"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"right_open_interval<string>: "</span> <span class="special"><<</span> <span class="identifier">city_interval</span> <span class="special"><<</span> <span class="string">" does "</span>
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<span class="special"><<</span> <span class="identifier">string</span><span class="special">(</span><span class="identifier">contains</span><span class="special">(</span><span class="identifier">city_interval</span><span class="special">,</span><span class="string">"Barcelona"</span><span class="special">)?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span>
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<span class="special"><<</span> <span class="string">" contain 'Barcelona'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"right_open_interval<string>: "</span> <span class="special"><<</span> <span class="identifier">city_interval</span> <span class="special"><<</span> <span class="string">" does "</span>
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<span class="special"><<</span> <span class="identifier">string</span><span class="special">(</span><span class="identifier">contains</span><span class="special">(</span><span class="identifier">city_interval</span><span class="special">,</span> <span class="string">"Boston"</span><span class="special">)?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span>
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<span class="special"><<</span> <span class="string">" contain 'Boston'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span>
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<span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"right_open_interval<Time> : "</span> <span class="special"><<</span> <span class="identifier">time_interval</span> <span class="special"><<</span> <span class="string">"\n\n"</span><span class="special">;</span>
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<span class="comment">// Using statically bounded intervals does not allows to apply operations</span>
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<span class="comment">// with elements on all interval containers, if their domain_type is continuous. </span>
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<span class="comment">// The code that follows is identical to example 'dynamic_interval'. Only 'internally'</span>
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<span class="comment">// the library default for the interval template now is 'right_open_interval' </span>
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<span class="identifier">interval</span><span class="special"><</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">type</span> <span class="identifier">unit_interval</span>
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<span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">right_open</span><span class="special">(</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">>(</span><span class="number">0</span><span class="special">),</span> <span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">>(</span><span class="number">1</span><span class="special">));</span>
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<span class="identifier">interval_set</span><span class="special"><</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">></span> <span class="identifier">unit_set</span><span class="special">(</span><span class="identifier">unit_interval</span><span class="special">);</span>
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<span class="identifier">interval_set</span><span class="special"><</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">></span> <span class="identifier">ratio_set</span><span class="special">(</span><span class="identifier">unit_set</span><span class="special">);</span>
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<span class="comment">// ratio_set -= rational<int>(1,3); // This line will not compile, because we can not</span>
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<span class="comment">// represent a singleton interval as right_open_interval.</span>
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<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
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<span class="special">}</span>
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<span class="comment">// Program output:</span>
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<span class="comment">//>> Interval Container Library: Sample static_interval.cpp <<</span>
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<span class="comment">//------------------------------------------------------------</span>
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<span class="comment">//----- Statically bounded intervals ----------------------------------------</span>
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<span class="comment">//right_open_interval<int> : [3,8)</span>
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<span class="comment">//right_open_interval<double>: [0.707107,1.41421) does NOT contain sqrt(2)</span>
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<span class="comment">//right_open_interval<string>: [Barcelona,Boston) does contain 'Barcelona'</span>
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<span class="comment">//right_open_interval<string>: [Barcelona,Boston) does NOT contain 'Boston'</span>
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<span class="comment">//right_open_interval<Time> : [mon:08:31,mon:17:20)</span>
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</pre>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2007-2010 Joachim
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Faulhaber<br>Copyright © 1999-2006 Cortex Software
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GmbH<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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>)
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