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  26 <a name="EqualityComparable"></a><div class="titlepage"></div>
  27 <div class="refnamediv">
  28 <h2><span class="refentrytitle">Concept EqualityComparable</span></h2>
  29 <p>EqualityComparable</p>
  30 </div>
  31 <div class="refsect1">
  32 <a name="id1128570"></a><h2>Description</h2>
  33 <p>Equality Comparable types must have <code class="computeroutput">==</code> and
  34   <code class="computeroutput">!=</code> operators.</p>
  35 </div>
  36 <div class="refsect1">
  37 <a name="id1128588"></a><h2>Notation</h2>
  38 <div class="variablelist"><dl>
  39 <dt><span class="term">X</span></dt>
  40 <dd>A type playing the role of comparable-type in the <a class="link" href="EqualityComparable.html" title="Concept EqualityComparable">EqualityComparable</a> concept.</dd>
  41 <dt>
  42 <span class="term"><code class="varname">x</code>, </span><span class="term"><code class="varname">y</code></span>
  43 </dt>
  44 <dd>Objects of type X</dd>
  45 </dl></div>
  46 </div>
  47 <div class="refsect1">
  48 <a name="id1128618"></a><h2>Valid expressions</h2>
  49 <div class="informaltable"><table class="table">
  50 <colgroup>
  51 <col>
  52 <col>
  53 <col>
  54 </colgroup>
  55 <thead><tr>
  56 <th>Name</th>
  57 <th>Expression</th>
  58 <th>Type</th>
  59 </tr></thead>
  60 <tbody>
  61 <tr>
  62 <td><p>Equality test</p></td>
  63 <td><p>x == y</p></td>
  64 <td><p>Convertible to <span class="type">bool</span></p></td>
  65 </tr>
  66 <tr>
  67 <td><p>Inequality test</p></td>
  68 <td><p>x != y</p></td>
  69 <td><p>Convertible to <span class="type">bool</span></p></td>
  70 </tr>
  71 </tbody>
  72 </table></div>
  73 </div>
  74 <div class="refsect1">
  75 <a name="id1128664"></a><h2>Models</h2>
  76 <div class="itemizedlist"><ul class="itemizedlist" type="disc">
  77 <li class="listitem"><span class="simplelist"><span class="type">int</span></span></li>
  78 <li class="listitem"><span class="simplelist"><span class="type">std::vector&lt;int&gt;</span></span></li>
  79 </ul></div>
  80 </div>
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