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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head>  <meta name="generator" content=  "HTML Tidy for Linux/x86 (vers 1 September 2005), see www.w3.org">  <title>Container operators</title>  <link href="../cppreference.css" rel="stylesheet" type="text/css"></head><body><table>  <tr>  <td>  <div class="body-content">  <div class="header-box">    <a href="../index.html">cppreference.com</a> &gt; <a href=    "index.html">C++ Multisets</a> &gt; <a href=    "container_operators.html">Container operators</a>  </div>  <div class="name-format">    Container operators  </div>  <div class="syntax-name-format">    Syntax:  </div>  <pre class="syntax-box">  #include &lt;set&gt;  container operator=(const container&amp; c2);  bool operator==(const container&amp; c1, const container&amp; c2);  bool operator!=(const container&amp; c1, const container&amp; c2);  bool operator&lt;(const container&amp; c1, const container&amp; c2);  bool operator&gt;(const container&amp; c1, const container&amp; c2);  bool operator&lt;=(const container&amp; c1, const container&amp; c2);  bool operator&gt;=(const container&amp; c1, const container&amp; c2);</pre>  <p>All of the C++ containers can be compared and assigned with the  standard comparison operators: ==, !=, &lt;=, &gt;=, &lt;, &gt;, and  =. Performing a comparison or assigning one multiset to another takes  <a href="../complexity.html">linear time</a>.</p>  <p>Two multisets are equal if:</p>  <ol>    <li>Their size is the same, and</li>    <li>Each member in location i in one multiset is equal to the the    member in location i in the other multiset.</li>  </ol>  <p>Comparisons among multisets are done lexicographically.</p>  <div class="related-name-format">    Related topics:  </div>  <div class="related-content">    (C++ Strings) <a href="../cppstring/string_operators.html">String    operators</a><br>    (C++ Strings) <a href="../cppstring/at.html">at</a><br>    (C++ Lists) <a href="../cpplist/merge.html">merge</a><br>    (C++ Lists) <a href="../cpplist/unique.html">unique</a>  </div>  </div>  </td>    </tr>  </table></body></html>

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