ceph/src/boost/libs/mpl/doc/refmanual/reverse-partition.html

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   7 <title>The MPL Reference Manual: reverse_partition</title>
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  11 <table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./reverse-unique.html" class="navigation-link">Prev</a>&nbsp;<a href="./reverse-stable-partition.html" class="navigation-link">Next</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./reverse-unique.html" class="navigation-link">Back</a>&nbsp;<a href="./reverse-stable-partition.html" class="navigation-link">Along</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./transformation-algorithms.html" class="navigation-link">Up</a>&nbsp;<a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td>
  12 <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./algorithms.html" class="navigation-link">Algorithms</a> / <a href="./transformation-algorithms.html" class="navigation-link">Transformation Algorithms</a> / <a href="./reverse-partition.html" class="navigation-link">reverse_partition</a></td>
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  14 <div class="section" id="reverse-partition">
  15 <h1><a class="toc-backref" href="./transformation-algorithms.html#id1506">reverse_partition</a></h1>
  16 <div class="section" id="id794">
  17 <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
  18 <pre class="literal-block">
  19 template&lt;
  20       typename Seq
  21     , typename Pred
  22     , typename In1 = <em>unspecified</em>
  23     , typename In2 = <em>unspecified</em>
  24     &gt;
  25 struct <a href="./reverse-partition.html" class="identifier">reverse_partition</a>
  26 {
  27     typedef <em>unspecified</em> type;
  28 };
  29 </pre>
  30 </div>
  31 <div class="section" id="id795">
  32 <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
  33 <p>Returns a pair of sequences together containing all elements in the range
  34 [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a>&lt;Seq&gt;::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a>&lt;Seq&gt;::type</span></tt>) split into two groups based on the predicate <tt class="literal"><span class="pre">Pred</span></tt>.
  35 <tt class="literal"><span class="pre"><a href="./reverse-partition.html" class="identifier">reverse_partition</a></span></tt> is a synonym for <a class="reference internal" href="./reverse-stable-partition.html">reverse_stable_partition</a>.</p>
  36 <p>[<em>Note:</em> This wording applies to a no-inserter version(s) of the algorithm. See the
  37 <cite>Expression semantics</cite> subsection for a precise specification of the algorithm's
  38 details in all cases — <em>end note</em>]</p>
  39 </div>
  40 <div class="section" id="id796">
  41 <h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
  42 <pre class="literal-block">
  43 #include &lt;<a href="../../../../boost/mpl/partition.hpp" class="header">boost/mpl/partition.hpp</a>&gt;
  44 </pre>
  45 </div>
  46 <div class="section" id="id797">
  47 <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
  48 <p><a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a></p>
  49 </div>
  50 <div class="section" id="id798">
  51 <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
  52 <table border="1" class="docutils table">
  53 <colgroup>
  54 <col width="22%" />
  55 <col width="41%" />
  56 <col width="36%" />
  57 </colgroup>
  58 <thead valign="bottom">
  59 <tr><th class="head">Parameter</th>
  60 <th class="head">Requirement</th>
  61 <th class="head">Description</th>
  62 </tr>
  63 </thead>
  64 <tbody valign="top">
  65 <tr><td><tt class="literal"><span class="pre">Seq</span></tt></td>
  66 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  67 <td>An original sequence.</td>
  68 </tr>
  69 <tr><td><tt class="literal"><span class="pre">Pred</span></tt></td>
  70 <td>Unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td>
  71 <td>A partitioning predicate.</td>
  72 </tr>
  73 <tr><td><tt class="literal"><span class="pre">In1</span></tt>, <tt class="literal"><span class="pre">In2</span></tt></td>
  74 <td><a class="reference internal" href="./inserter.html">Inserter</a></td>
  75 <td>Output inserters.</td>
  76 </tr>
  77 </tbody>
  78 </table>
  79 </div>
  80 <div class="section" id="id799">
  81 <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
  82 <p>The semantics of an expression are defined only
  83 where they differ from, or are not defined in <a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a>.</p>
  84 <p>For any <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">s</span></tt>, an unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">pred</span></tt>, and <a class="reference internal" href="./inserter.html">Inserter</a>s
  85 <tt class="literal"><span class="pre">in1</span></tt> and <tt class="literal"><span class="pre">in2</span></tt>:</p>
  86 <pre class="literal-block">
  87 typedef <a href="./reverse-partition.html" class="identifier">reverse_partition</a>&lt;s,pred,in1,in2&gt;::type r;
  88 </pre>
  89 <table class="docutils field-list" frame="void" rules="none">
  90 <col class="field-name" />
  91 <col class="field-body" />
  92 <tbody valign="top">
  93 <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">A <a class="reference internal" href="./pair.html">pair</a>.</p>
  94 </td>
  95 </tr>
  96 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p>
  97 <pre class="last literal-block">
  98 typedef <a href="./reverse-stable-partition.html" class="identifier">reverse_stable_partition</a>&lt;s,pred,in1,in2&gt;::type r;
  99 </pre>
 100 </td>
 101 </tr>
 102 </tbody>
 103 </table>
 104 </div>
 105 <div class="section" id="id800">
 106 <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
 107 <p>Linear. Exactly <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span></tt> applications of <tt class="literal"><span class="pre">pred</span></tt>, and <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span></tt>
 108 of summarized <tt class="literal"><span class="pre">in1::operation</span></tt> / <tt class="literal"><span class="pre">in2::operation</span></tt> applications.</p>
 109 </div>
 110 <div class="section" id="id801">
 111 <h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
 112 <pre class="literal-block">
 113 template&lt; typename N &gt; struct is_odd : <a href="./bool.html" class="identifier">bool_</a>&lt;(N::value % 2)&gt; {};
 114
 115 typedef <a href="./partition.html" class="identifier">partition</a>&lt;
 116       <a href="./range-c.html" class="identifier">range_c</a>&lt;int,0,10&gt;
 117     , is_odd&lt;<a href="./placeholders.html" class="identifier">_1</a>&gt;
 118     , <a href="./back-inserter.html" class="identifier">back_inserter</a>&lt; <a href="./vector.html" class="identifier">vector</a>&lt;&gt; &gt;
 119     , <a href="./back-inserter.html" class="identifier">back_inserter</a>&lt; <a href="./vector.html" class="identifier">vector</a>&lt;&gt; &gt;
 120     &gt;::type r;
 121
 122 <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>&lt; r::first, <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,9,7,5,3,1&gt; &gt; ));
 123 <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>&lt; r::second, <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,8,6,4,2,0&gt; > ));
 124 </pre>
 125 </div>
 126 <div class="section" id="id802">
 127 <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
 128 <p><a class="reference internal" href="./transformation-algorithms.html">Transformation Algorithms</a>, <a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a>, <a class="reference internal" href="./partition.html">partition</a>, <a class="reference internal" href="./reverse-stable-partition.html">reverse_stable_partition</a>, <a class="reference internal" href="./sort.html">sort</a></p>
 129 <!-- Algorithms/Transformation Algorithms//reverse_stable_partition |190 -->
 130 </div>
 131 </div>
 132
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 135 <td><div class="copyright-footer"><div class="copyright">Copyright ©  2001-2009 Aleksey Gurtovoy and David Abrahams</div>
 136 Distributed under the Boost Software License, Version 1.0. (See accompanying
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