forked from boostorg/iterator
64 lines
2.7 KiB
HTML
64 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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<meta name="generator" content="Docutils 0.3.1: http://docutils.sourceforge.net/" />
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<title>Single Pass Iterator Concept</title>
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<link rel="stylesheet" href="default.css" type="text/css" />
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</head>
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<body>
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<div class="document" id="single-pass-iterator-concept">
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<h1 class="title">Single Pass Iterator Concept</h1>
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<p>A class or built-in type <tt class="literal"><span class="pre">X</span></tt> models the <em>Single Pass Iterator</em>
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concept if the following expressions are valid and respect the stated
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semantics.</p>
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<table border class="table">
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<colgroup>
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<col width="36%" />
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<col width="33%" />
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<col width="31%" />
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</colgroup>
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<thead valign="bottom">
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<tr><th colspan="3">Single Pass Iterator Requirements (in addition to Incrementable Iterator and Equality
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Comparable)</th>
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</tr>
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<tr><th>Expression</th>
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<th>Return Type</th>
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<th>Assertion/Semantics /
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Pre-/Post-condition</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="literal"><span class="pre">++r</span></tt></td>
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<td><tt class="literal"><span class="pre">X&</span></tt></td>
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<td>pre: <tt class="literal"><span class="pre">r</span></tt> is
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dereferenceable; post:
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<tt class="literal"><span class="pre">r</span></tt> is dereferenceable or
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<tt class="literal"><span class="pre">r</span></tt> is past-the-end</td>
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</tr>
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<tr><td><tt class="literal"><span class="pre">a</span> <span class="pre">==</span> <span class="pre">b</span></tt></td>
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<td>convertible to <tt class="literal"><span class="pre">bool</span></tt></td>
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<td><tt class="literal"><span class="pre">==</span></tt> is an equivalence
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relation over its domain</td>
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</tr>
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<tr><td><tt class="literal"><span class="pre">a</span> <span class="pre">!=</span> <span class="pre">b</span></tt></td>
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<td>convertible to <tt class="literal"><span class="pre">bool</span></tt></td>
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<td><tt class="literal"><span class="pre">!(a</span> <span class="pre">==</span> <span class="pre">b)</span></tt></td>
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</tr>
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<tr><td><tt class="literal"><span class="pre">iterator_traversal<X>::type</span></tt></td>
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<td>Convertible to
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<tt class="literal"><span class="pre">single_pass_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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<hr class="footer" />
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<div class="footer">
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<a class="reference" href="SinglePassIterator.rst">View document source</a>.
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