http://programmingexamples.net/w/index.php?action=history&feed=atom&title=CPP%2FSTL%2FSet%2FSetCustomComparison 2026-04-21T12:37:13Z Revision history for this page on the wiki MediaWiki 1.23.5 http://programmingexamples.net/w/index.php?title=CPP/STL/Set/SetCustomComparison&diff=620&oldid=prev 2011-01-30T15:07:22Z

<p>Created page with &#039;==SetCustomComparison.cpp== &lt;source lang=&quot;cpp&quot;&gt; #include &lt;iostream&gt; #include &lt;set&gt; #include &lt;cmath&gt; // Don&#039;t allow elements that are within &#039;tolerance&#039; of each other to be added…&#039;</p> <p><b>New page</b></p><div>==SetCustomComparison.cpp==<br /> &lt;source lang=&quot;cpp&quot;&gt;<br /> #include &lt;iostream&gt;<br /> #include &lt;set&gt;<br /> #include &lt;cmath&gt;<br /> <br /> // Don't allow elements that are within 'tolerance' of each other to be added to the set<br /> struct MyComparison<br /> {<br /> bool operator()(const float s1, const float s2) const<br /> {<br /> double tolerance = 1e-4;<br /> if((s1 &lt; s2) &amp;&amp; !( fabs(s1 - s2) &lt; tolerance))<br /> {<br /> return true;<br /> }<br /> else<br /> {<br /> return false;<br /> }<br /> }<br /> };<br /> <br /> int main(int argc, char* argv[])<br /> {<br /> std::set&lt;float, MyComparison&gt; S;<br /> <br /> // Add 10 integers (0 to 9) to the set<br /> for(unsigned int i = 0; i &lt; 10; i++)<br /> {<br /> S.insert(static_cast&lt;float&gt;(i));<br /> }<br /> <br /> // Output all of the elements in the set<br /> for(std::set&lt;float&gt;::iterator it1 = S.begin(); it1 != S.end(); it1++)<br /> {<br /> std::cout &lt;&lt; &quot; &quot; &lt;&lt; *it1;<br /> }<br /> <br /> return 0;<br /> }<br /> <br /> &lt;/source&gt;<br /> <br /> == CMakeLists.txt ==<br /> &lt;source lang=&quot;cmake&quot;&gt;<br /> cmake_minimum_required(VERSION 2.6)<br /> <br /> Project(SetCustomComparison)<br /> <br /> ADD_EXECUTABLE(SetCustomComparison SetCustomComparison.cpp)<br /> <br /> &lt;/source&gt;</div>

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