ceph/src/boost/libs/mpl/doc/refmanual/transform-view.html

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  12 <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./sequences.html" class="navigation-link">Sequences</a> / <a href="./views.html" class="navigation-link">Views</a> / <a href="./transform-view.html" class="navigation-link">transform_view</a></td>
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  14 <div class="section" id="transform-view">
  15 <h1><a class="toc-backref" href="./views.html#id1422">transform_view</a></h1>
  16 <div class="section" id="id159">
  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 F
  22     &gt;
  23 struct <a href="./transform-view.html" class="identifier">transform_view</a>
  24 {
  25     // <em>unspecified</em>
  26     // <em>...</em>
  27 };
  28 </pre>
  29 </div>
  30 <div class="section" id="id160">
  31 <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
  32 <p>A view the full range of <tt class="literal"><span class="pre">Sequence</span></tt>'s transformed elements.</p>
  33 </div>
  34 <div class="section" id="id161">
  35 <h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
  36 <pre class="literal-block">
  37 #include &lt;<a href="../../../../boost/mpl/transform_view.hpp" class="header">boost/mpl/transform_view.hpp</a>&gt;
  38 </pre>
  39 </div>
  40 <div class="section" id="id162">
  41 <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
  42 <ul class="simple">
  43 <li><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></li>
  44 </ul>
  45 </div>
  46 <div class="section" id="id163">
  47 <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
  48 <table border="1" class="docutils table">
  49 <colgroup>
  50 <col width="19%" />
  51 <col width="40%" />
  52 <col width="40%" />
  53 </colgroup>
  54 <thead valign="bottom">
  55 <tr><th class="head">Parameter</th>
  56 <th class="head">Requirement</th>
  57 <th class="head">Description</th>
  58 </tr>
  59 </thead>
  60 <tbody valign="top">
  61 <tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td>
  62 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  63 <td>A sequence to wrap.</td>
  64 </tr>
  65 <tr><td><tt class="literal"><span class="pre">F</span></tt></td>
  66 <td>Unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td>
  67 <td>A transformation.</td>
  68 </tr>
  69 </tbody>
  70 </table>
  71 </div>
  72 <div class="section" id="id164">
  73 <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
  74 <p>The semantics of an expression are defined only
  75 where they differ from, or are not defined in <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</p>
  76 <p>In the following table, <tt class="literal"><span class="pre">v</span></tt> is an instance of <tt class="literal"><span class="pre"><a href="./transform-view.html" class="identifier">transform_view</a></span></tt>, <tt class="literal"><span class="pre">s</span></tt> is an arbitrary
  77 <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>, and <tt class="literal"><span class="pre">f</span></tt> is an unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a>.</p>
  78 <table border="1" class="docutils table">
  79 <colgroup>
  80 <col width="37%" />
  81 <col width="63%" />
  82 </colgroup>
  83 <thead valign="bottom">
  84 <tr><th class="head">Expression</th>
  85 <th class="head">Semantics</th>
  86 </tr>
  87 </thead>
  88 <tbody valign="top">
  89 <tr><td><pre class="first last literal-block">
  90 <a href="./transform-view.html" class="identifier">transform_view</a>&lt;s,f&gt;
  91 <a href="./transform-view.html" class="identifier">transform_view</a>&lt;s,f&gt;::type
  92 </pre>
  93 </td>
  94 <td>A lazy <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> such that for each <tt class="literal"><span class="pre">i</span></tt> in the
  95 range [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a>&lt;v&gt;::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a>&lt;v&gt;::type</span></tt>) and each <tt class="literal"><span class="pre">j</span></tt> in for in the range
  96 [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a>&lt;s&gt;::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a>&lt;s&gt;::type</span></tt>) <tt class="literal"><span class="pre"><a href="./deref.html" class="identifier">deref</a>&lt;i&gt;::type</span></tt> is identical to
  97 <tt class="literal"><span class="pre"><a href="./apply.html" class="identifier">apply</a>&lt;</span> <span class="pre">f,</span> <span class="pre"><a href="./deref.html" class="identifier">deref</a>&lt;j&gt;::type</span> <span class="pre">&gt;::type</span></tt>.</td>
  98 </tr>
  99 <tr><td><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;v&gt;::type</span></tt></td>
 100 <td>The size of <tt class="literal"><span class="pre">v</span></tt>;
 101 <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;v&gt;::value</span> <span class="pre">==</span> <span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span></tt>;
 102 linear complexity; see <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</td>
 103 </tr>
 104 </tbody>
 105 </table>
 106 </div>
 107 <div class="section" id="id165">
 108 <h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
 109 <p>Find the largest type in a sequence.</p>
 110 <pre class="literal-block">
 111 typedef <a href="./vector.html" class="identifier">vector</a>&lt;int,long,char,char[50],double&gt; types;
 112 typedef <a href="./max-element.html" class="identifier">max_element</a>&lt;
 113       <a href="./transform-view.html" class="identifier">transform_view</a>&lt; types, size_of&lt;_&gt; &gt;
 114     &gt;::type iter;
 115
 116 <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./deref.html" class="identifier">deref</a>&lt;iter&gt;::type::value, ==, 50 );
 117 </pre>
 118 </div>
 119 <div class="section" id="id166">
 120 <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
 121 <p><a class="reference internal" href="./sequences.html">Sequences</a>, <a class="reference internal" href="./views.html">Views</a>, <a class="reference internal" href="./filter-view.html">filter_view</a>, <a class="reference internal" href="./joint-view.html">joint_view</a>, <a class="reference internal" href="./zip-view.html">zip_view</a>, <a class="reference internal" href="./iterator-range.html">iterator_range</a></p>
 122 <!-- Sequences/Views//zip_view -->
 123 </div>
 124 </div>
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 128 <td><div class="copyright-footer"><div class="copyright">Copyright ©  2001-2009 Aleksey Gurtovoy and David Abrahams</div>
 129 Distributed under the Boost Software License, Version 1.0. (See accompanying
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