<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Dynamic interval</title> <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.74.0"> <link rel="home" href="../../index.html" title="Chapter 1. Boost.Icl"> <link rel="up" href="../examples.html" title="Examples"> <link rel="prev" href="interval.html" title="Interval"> <link rel="next" href="static_interval.html" title="Static interval"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr> <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> <td align="center"><a href="../../../../../../index.html">Home</a></td> <td align="center"><a href="../../../../../libraries.htm">Libraries</a></td> <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> <td align="center"><a href="../../../../../../more/index.htm">More</a></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="interval.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../examples.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="static_interval.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> </div> <div class="section boost_icl_examples_dynamic_interval" lang="en"> <div class="titlepage"><div><div><h3 class="title"> <a name="boost_icl.examples.dynamic_interval"></a><a class="link" href="dynamic_interval.html" title="Dynamic interval">Dynamic interval</a> </h3></div></div></div> <p> </p> <p> </p> <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> <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> <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> <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> <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> <span class="comment">// Dynamically bounded intervals 'discrete_interval' and 'continuous_interval' </span><span class="comment">// are indirectly included via interval containers as library defaults. </span><span class="preprocessor">#include</span> <span class="string">"../toytime.hpp"</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">rational</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span> <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span> <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> <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">">>Interval Container Library: Sample interval.cpp <<\n"</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----------------------------------------------------\n"</span><span class="special">;</span> <span class="comment">// Dynamically bounded intervals are the library default for </span> <span class="comment">// interval parameters in interval containers. </span> <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span> <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> <span class="special">,</span> <span class="identifier">discrete_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span> <span class="special">));</span> <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span> <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> <span class="special">,</span> <span class="identifier">continuous_interval</span><span class="special"><</span><span class="keyword">float</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span> <span class="special">));</span> <span class="comment">// As we can see the library default chooses the appropriate </span> <span class="comment">// class template instance discrete_interval<T> or continuous_interval<T> </span> <span class="comment">// dependent on the domain_type T. The library default for intervals </span> <span class="comment">// is also available via the template 'interval': </span> <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span> <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> <span class="special">,</span> <span class="identifier">discrete_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span> <span class="special">));</span> <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span> <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">float</span><span class="special">>::</span><span class="identifier">type</span> <span class="special">,</span> <span class="identifier">continuous_interval</span><span class="special"><</span><span class="keyword">float</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span> <span class="special">));</span> <span class="comment">// template interval also provides static functions for the four border types </span> <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">closed</span><span class="special">(</span><span class="number">3</span><span class="special">,</span> <span class="number">7</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">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> <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">left_open</span><span class="special">(</span><span class="string">"Barcelona"</span><span class="special">,</span> <span class="string">"Boston"</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">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">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">30</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> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----- Dynamically bounded intervals ----------------------------------------\n"</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">" discrete_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> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"continuous_interval<double>: "</span> <span class="special"><<</span> <span class="identifier">sqrt_interval</span> <span class="special"><<</span> <span class="string">" does "</span> <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> <span class="special"><<</span> <span class="string">" contain sqrt(2)"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"continuous_interval<string>: "</span> <span class="special"><<</span> <span class="identifier">city_interval</span> <span class="special"><<</span> <span class="string">" does "</span> <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> <span class="special"><<</span> <span class="string">" contain 'Barcelona'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"continuous_interval<string>: "</span> <span class="special"><<</span> <span class="identifier">city_interval</span> <span class="special"><<</span> <span class="string">" does "</span> <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">"Berlin"</span><span class="special">)?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span> <span class="special"><<</span> <span class="string">" contain 'Berlin'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">" discrete_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> <span class="comment">// Using dynamically bounded intervals allows to apply operations </span> <span class="comment">// with intervals and also with elements on all interval containers </span> <span class="comment">// including interval containers of continuous domain types: </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">type</span> <span class="identifier">unit_interval</span> <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> <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> <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> <span class="identifier">ratio_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="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">);</span> <span class="comment">// Subtract 1/3 from the set </span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----- Manipulation of single values in continuous sets ---------------------\n"</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"1/3 subtracted from [0..1) : "</span> <span class="special"><<</span> <span class="identifier">ratio_set</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"The set does "</span> <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">ratio_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="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">))?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span> <span class="special"><<</span> <span class="string">" contain '1/3'"</span> <span class="special"><<</span> <span class="identifier">endl</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> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Flipping the holey set : "</span> <span class="special"><<</span> <span class="identifier">ratio_set</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"yields the subtracted : 1/3\n\n"</span><span class="special">;</span> <span class="comment">// Of course we can use interval types that are different from the </span> <span class="comment">// library default by explicit instantiation: </span> <span class="identifier">split_interval_set</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">,</span> <span class="identifier">closed_interval</span><span class="special"><</span><span class="identifier">Time</span><span class="special">></span> <span class="special">></span> <span class="identifier">intuitive_times</span><span class="special">;</span> <span class="comment">// Interval set 'intuitive_times' uses statically bounded closed intervals </span> <span class="identifier">intuitive_times</span> <span class="special">+=</span> <span class="identifier">closed_interval</span><span class="special"><</span><span class="identifier">Time</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">9</span><span class="special">,</span><span class="number">00</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">10</span><span class="special">,</span><span class="number">59</span><span class="special">));</span> <span class="identifier">intuitive_times</span> <span class="special">+=</span> <span class="identifier">closed_interval</span><span class="special"><</span><span class="identifier">Time</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">10</span><span class="special">,</span><span class="number">00</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">11</span><span class="special">,</span><span class="number">59</span><span class="special">));</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----- Here we are NOT using the library default for intervals --------------\n"</span><span class="special">;</span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">intuitive_times</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> <span class="special">}</span> <span class="comment">// Program output: </span><span class="comment">//>>Interval Container Library: Sample interval.cpp << </span><span class="comment">//---------------------------------------------------- </span><span class="comment">//----- Dynamically bounded intervals ---------------------------------------- </span><span class="comment">// discrete_interval<int> : [3,7] </span><span class="comment">//continuous_interval<double>: [0.707107,1.41421) does NOT contain sqrt(2) </span><span class="comment">//continuous_interval<string>: (Barcelona,Boston] does NOT contain 'Barcelona' </span><span class="comment">//continuous_interval<string>: (Barcelona,Boston] does contain 'Berlin' </span><span class="comment">// discrete_interval<Time> : (mon:08:30,mon:17:20) </span><span class="comment">// </span><span class="comment">//----- Manipulation of single values in continuous sets --------------------- </span><span class="comment">//1/3 subtracted from [0..1) : {[0/1,1/3)(1/3,1/1)} </span><span class="comment">//The set does NOT contain '1/3' </span><span class="comment">//Flipping the holey set : {[1/3,1/3]} </span><span class="comment">//yields the subtracted : 1/3 </span><span class="comment">// </span><span class="comment">//----- Here we are NOT using the library default for intervals -------------- </span><span class="comment">//{[mon:09:00,mon:09:59][mon:10:00,mon:10:59][mon:11:00,mon:11:59]} </span></pre> <p> </p> <p> </p> </div> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <td align="left"></td> <td align="right"><div class="copyright-footer">Copyright © 2007 -2010 Joachim Faulhaber<br>Copyright © 1999 -2006 Cortex Software GmbH<p> Distributed under the Boost Software License, Version 1.0. (See accompanying 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>) </p> </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="interval.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../examples.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="static_interval.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>