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

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   7 <title>The MPL Reference Manual: reverse_replace_if</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-replace.html" class="navigation-link">Prev</a>&nbsp;<a href="./reverse-remove.html" class="navigation-link">Next</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./reverse-replace.html" class="navigation-link">Back</a>&nbsp;<a href="./reverse-remove.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-replace-if.html" class="navigation-link">reverse_replace_if</a></td>
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  14 <div class="section" id="reverse-replace-if">
  15 <h1><a class="toc-backref" href="./transformation-algorithms.html#id1502">reverse_replace_if</a></h1>
  16 <div class="section" id="id758">
  17 <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
  18 <pre class="literal-block">
  19 template&lt;
  20       typename Sequence
  21     , typename Pred
  22     , typename In = <em>unspecified</em>
  23     &gt;
  24 struct <a href="./reverse-replace-if.html" class="identifier">reverse_replace_if</a>
  25 {
  26     typedef <em>unspecified</em> type;
  27 };
  28 </pre>
  29 </div>
  30 <div class="section" id="id759">
  31 <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
  32 <p>Returns a reversed copy of the original sequence where every type that satisfies
  33 the predicate <tt class="literal"><span class="pre">Pred</span></tt> has been replaced with <tt class="literal"><span class="pre">NewType</span></tt>.</p>
  34 <p>[<em>Note:</em> This wording applies to a no-inserter version(s) of the algorithm. See the
  35 <cite>Expression semantics</cite> subsection for a precise specification of the algorithm's
  36 details in all cases — <em>end note</em>]</p>
  37 </div>
  38 <div class="section" id="id760">
  39 <h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
  40 <pre class="literal-block">
  41 #include &lt;<a href="../../../../boost/mpl/replace_if.hpp" class="header">boost/mpl/replace_if.hpp</a>&gt;
  42 </pre>
  43 </div>
  44 <div class="section" id="id761">
  45 <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
  46 <p><a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a></p>
  47 </div>
  48 <div class="section" id="id762">
  49 <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
  50 <table border="1" class="docutils table">
  51 <colgroup>
  52 <col width="19%" />
  53 <col width="43%" />
  54 <col width="38%" />
  55 </colgroup>
  56 <thead valign="bottom">
  57 <tr><th class="head">Parameter</th>
  58 <th class="head">Requirement</th>
  59 <th class="head">Description</th>
  60 </tr>
  61 </thead>
  62 <tbody valign="top">
  63 <tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td>
  64 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  65 <td>An original sequence.</td>
  66 </tr>
  67 <tr><td><tt class="literal"><span class="pre">Pred</span></tt></td>
  68 <td>Unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td>
  69 <td>A replacement condition.</td>
  70 </tr>
  71 <tr><td><tt class="literal"><span class="pre">NewType</span></tt></td>
  72 <td>Any type</td>
  73 <td>A type to replace with.</td>
  74 </tr>
  75 <tr><td><tt class="literal"><span class="pre">In</span></tt></td>
  76 <td><a class="reference internal" href="./inserter.html">Inserter</a></td>
  77 <td>An inserter.</td>
  78 </tr>
  79 </tbody>
  80 </table>
  81 </div>
  82 <div class="section" id="id763">
  83 <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
  84 <p>The semantics of an expression are defined only
  85 where they differ from, or are not defined in <a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a>.</p>
  86 <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>,
  87 an <a class="reference internal" href="./inserter.html">Inserter</a> <tt class="literal"><span class="pre">in</span></tt>, and arbitrary type <tt class="literal"><span class="pre">x</span></tt>:</p>
  88 <pre class="literal-block">
  89 typedef <a href="./reverse-replace-if.html" class="identifier">reverse_replace_if</a>&lt;s,pred,x,in&gt;::type r;
  90 </pre>
  91 <table class="docutils field-list" frame="void" rules="none">
  92 <col class="field-name" />
  93 <col class="field-body" />
  94 <tbody valign="top">
  95 <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">A type.</p>
  96 </td>
  97 </tr>
  98 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p>
  99 <pre class="last literal-block">
 100 typedef <a href="./lambda.html" class="identifier">lambda</a>&lt;pred&gt;::type p;
 101 typedef <a href="./reverse-transform.html" class="identifier">reverse_transform</a>&lt; s, <a href="./if.html" class="identifier">if_</a>&lt; apply_wrap1&lt;p,<a href="./placeholders.html" class="identifier">_1</a>&gt;,x,<a href="./placeholders.html" class="identifier">_1</a>&gt;, in &gt;::type r;
 102 </pre>
 103 </td>
 104 </tr>
 105 </tbody>
 106 </table>
 107 </div>
 108 <div class="section" id="id764">
 109 <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
 110 <p>Linear. Performs 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 at most
 111 <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span></tt> insertions.</p>
 112 </div>
 113 <div class="section" id="id765">
 114 <h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
 115 <pre class="literal-block">
 116 typedef <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,1,4,5,2,7,5,3,5&gt; numbers;
 117 typedef <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,1,4,0,2,0,0,3,0&gt; expected;
 118 typedef <a href="./reverse-replace-if.html" class="identifier">reverse_replace_if</a>&lt;
 119       numbers
 120     , <a href="./greater.html" class="identifier">greater</a>&lt; _, <a href="./int.html" class="identifier">int_</a>&lt;4&gt; &gt;
 121     , <a href="./int.html" class="identifier">int_</a>&lt;0&gt;
 122     , <a href="./front-inserter.html" class="identifier">front_inserter</a>&lt; <a href="./vector.html" class="identifier">vector</a>&lt;&gt; &gt;
 123     &gt;::type result;
 124
 125 <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>&lt; result,expected, <a href="./equal-to.html" class="identifier">equal_to</a>&lt;_,_&gt; > ));
 126 </pre>
 127 </div>
 128 <div class="section" id="id766">
 129 <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
 130 <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="./replace-if.html">replace_if</a>, <a class="reference internal" href="./reverse-replace.html">reverse_replace</a>, <a class="reference internal" href="./remove-if.html">remove_if</a>, <a class="reference internal" href="./transform.html">transform</a></p>
 131 <!-- Algorithms/Transformation Algorithms//reverse_remove |160 -->
 132 </div>
 133 </div>
 134
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 137 <td><div class="copyright-footer"><div class="copyright">Copyright ©  2001-2009 Aleksey Gurtovoy and David Abrahams</div>
 138 Distributed under the Boost Software License, Version 1.0. (See accompanying
 139 file LICENSE_1_0.txt or copy at <a class="reference external" href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</div></td></tr></table></body>
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