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67 lines
2.7 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" />
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<title>Incrementable Iterator Concept</title>
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<link rel="stylesheet" href="../../../rst.css" type="text/css" />
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</head>
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<body>
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<div class="document" id="incrementable-iterator-concept">
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<h1 class="title">Incrementable Iterator Concept</h1>
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<!-- Copyright David Abrahams 2006. Distributed under the Boost -->
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<!-- Software License, Version 1.0. (See accompanying -->
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<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
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<p>A class or built-in type <tt class="docutils literal"><span class="pre">X</span></tt> models the <em>Incrementable Iterator</em>
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concept if, in addition to <tt class="docutils literal"><span class="pre">X</span></tt> being Assignable and Copy
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Constructible, the following expressions are valid and respect the
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stated semantics.</p>
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<table border="1" class="docutils">
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<colgroup>
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<col width="39%" />
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<col width="37%" />
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<col width="24%" />
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</colgroup>
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<thead valign="bottom">
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<tr><th class="head" colspan="3">Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible)</th>
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</tr>
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<tr><th class="head">Expression</th>
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<th class="head">Return Type</th>
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<th class="head">Assertion/Semantics</th>
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</tr>
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</thead>
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<tbody valign="top">
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<tr><td><tt class="docutils literal"><span class="pre">++r</span></tt></td>
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<td><tt class="docutils literal"><span class="pre">X&</span></tt></td>
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<td><tt class="docutils literal"><span class="pre">&r</span> <span class="pre">==</span> <span class="pre">&++r</span></tt></td>
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</tr>
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<tr><td><tt class="docutils literal"><span class="pre">r++</span></tt></td>
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<td><tt class="docutils literal"><span class="pre">X</span></tt></td>
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<td><pre class="first last literal-block">
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{
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X tmp = r;
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++r;
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return tmp;
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}
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</pre>
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</td>
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</tr>
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<tr><td><tt class="docutils literal"><span class="pre">iterator_traversal<X>::type</span></tt></td>
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<td>Convertible to
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<tt class="docutils literal"><span class="pre">incrementable_traversal_tag</span></tt></td>
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<td> </td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="footer">
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<hr class="footer" />
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<a class="reference external" href="IncrementableIterator.rst">View document source</a>.
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