ceph/src/boost/libs/iterator/doc/IncrementableIterator.html

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  11 <div class="document" id="incrementable-iterator-concept">
  12 <h1 class="title">Incrementable Iterator Concept</h1>
  13
  14 <!-- Copyright David Abrahams 2006. Distributed under the Boost -->
  15 <!-- Software License, Version 1.0. (See accompanying -->
  16 <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
  17 <p>A class or built-in type <tt class="docutils literal"><span class="pre">X</span></tt> models the <em>Incrementable Iterator</em>
  18 concept if, in addition to <tt class="docutils literal"><span class="pre">X</span></tt> being Assignable and Copy
  19 Constructible, the following expressions are valid and respect the
  20 stated semantics.</p>
  21 <table border="1" class="docutils">
  22 <colgroup>
  23 <col width="39%" />
  24 <col width="37%" />
  25 <col width="24%" />
  26 </colgroup>
  27 <thead valign="bottom">
  28 <tr><th class="head" colspan="3">Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible)</th>
  29 </tr>
  30 <tr><th class="head">Expression</th>
  31 <th class="head">Return Type</th>
  32 <th class="head">Assertion/Semantics</th>
  33 </tr>
  34 </thead>
  35 <tbody valign="top">
  36 <tr><td><tt class="docutils literal"><span class="pre">++r</span></tt></td>
  37 <td><tt class="docutils literal"><span class="pre">X&amp;</span></tt></td>
  38 <td><tt class="docutils literal"><span class="pre">&amp;r</span> <span class="pre">==</span> <span class="pre">&amp;++r</span></tt></td>
  39 </tr>
  40 <tr><td><tt class="docutils literal"><span class="pre">r++</span></tt></td>
  41 <td><tt class="docutils literal"><span class="pre">X</span></tt></td>
  42 <td><pre class="first last literal-block">
  43 {
  44    X tmp = r;
  45    ++r;
  46    return tmp;
  47 }
  48 </pre>
  49 </td>
  50 </tr>
  51 <tr><td><tt class="docutils literal"><span class="pre">iterator_traversal&lt;X&gt;::type</span></tt></td>
  52 <td>Convertible to
  53 <tt class="docutils literal"><span class="pre">incrementable_traversal_tag</span></tt></td>
  54 <td>&nbsp;</td>
  55 </tr>
  56 </tbody>
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