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<h1 class="title">Incrementable Iterator Concept</h1>
<div class="document" id="incrementable-iterator-concept">
<p>A class or built-in type <tt class="literal"><span class="pre">X</span></tt> models the <em>Incrementable Iterator</em>
concept if, in addition to <tt class="literal"><span class="pre">X</span></tt> being Assignable and Copy
Constructible, the following expressions are valid and respect the
stated semantics.</p>
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<tr><th colspan="3">Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible)</th>
</tr>
<tr><th>Expression</th>
<th>Return Type</th>
<th>Assertion/Semantics</th>
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</thead>
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<tr><td><tt class="literal"><span class="pre">++r</span></tt></td>
<td><tt class="literal"><span class="pre">X&</span></tt></td>
<td><tt class="literal"><span class="pre">&r</span> <span class="pre">==</span> <span class="pre">&++r</span></tt></td>
</tr>
<tr><td><tt class="literal"><span class="pre">r++</span></tt></td>
<td><tt class="literal"><span class="pre">X</span></tt></td>
<td><pre class="first last literal-block">
{
X tmp = r;
++r;
return tmp;
}
</pre>
</td>
</tr>
<tr><td><tt class="literal"><span class="pre">iterator_traversal<X>::type</span></tt></td>
<td>Convertible to
<tt class="literal"><span class="pre">incrementable_traversal_tag</span></tt></td>
<td> </td>
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