ceph/src/boost/libs/mpl/doc/refmanual/integral-sequence-wrapper.html

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   7 <title>The MPL Reference Manual: Integral Sequence Wrapper</title>
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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="./concepts.html" class="navigation-link">Concepts</a> / <a href="./integral-sequence-wrapper.html" class="navigation-link">Integral Sequence Wrapper</a></td>
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  14 <div class="section" id="integral-sequence-wrapper">
  15 <h1><a class="toc-backref" href="./concepts.html#id1403">Integral Sequence Wrapper</a></h1>
  16 <div class="section" id="id40">
  17 <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
  18 <p>An <a class="reference internal" href="./integral-sequence-wrapper.html">Integral Sequence Wrapper</a> is a class template that provides a concise
  19 interface for creating a corresponding sequence of <a class="reference internal" href="./integral-constant.html">Integral Constant</a>s. In
  20 particular, assuming that <tt class="literal"><span class="pre">seq</span></tt> is a name of the wrapper's underlying
  21 sequence and <em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub> are integral constants of an integral type <tt class="literal"><span class="pre">T</span></tt> to
  22 be stored in the sequence, the wrapper provides us with the following
  23 notation:</p>
  24 <blockquote>
  25 <div class="line-block">
  26 <div class="line"><tt class="literal"><span class="pre">seq_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></div>
  27 </div>
  28 </blockquote>
  29 <p>If <tt class="literal"><span class="pre">seq</span></tt> is a <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a>, <em>numbered</em> wrapper forms are
  30 also avaialable:</p>
  31 <blockquote>
  32 <div class="line-block">
  33 <div class="line"><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></div>
  34 </div>
  35 </blockquote>
  36 </div>
  37 <div class="section" id="id41">
  38 <h3><a class="subsection-title" href="#expression-requirements" name="expression-requirements">Expression requirements</a></h3>
  39 <p>In the following table and subsequent specifications, <tt class="literal"><span class="pre">seq</span></tt> is a placeholder token for the
  40 <a class="reference internal" href="./integral-sequence-wrapper.html">Integral Sequence Wrapper</a>'s underlying sequence's name.</p>
  41 <table border="1" class="docutils table">
  42 <colgroup>
  43 <col width="38%" />
  44 <col width="28%" />
  45 <col width="33%" />
  46 </colgroup>
  47 <thead valign="bottom">
  48 <tr><th class="head">Expression</th>
  49 <th class="head">Type</th>
  50 <th class="head">Complexity</th>
  51 </tr>
  52 </thead>
  53 <tbody valign="top">
  54 <tr><td><tt class="literal"><span class="pre">seq_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></td>
  55 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  56 <td>Amortized constant time.</td>
  57 </tr>
  58 <tr><td><tt class="literal"><span class="pre">seq_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;::type</span></tt></td>
  59 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  60 <td>Amortized constant time.</td>
  61 </tr>
  62 <tr><td><tt class="literal"><span class="pre">seq_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;::<a href="./value-type.html" class="identifier">value_type</a></span></tt></td>
  63 <td>An integral type</td>
  64 <td>Amortized constant time.</td>
  65 </tr>
  66 <tr><td><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt></td>
  67 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  68 <td>Amortized constant time.</td>
  69 </tr>
  70 <tr><td><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;::type</span></tt></td>
  71 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  72 <td>Amortized constant time.</td>
  73 </tr>
  74 <tr><td><tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">_c&lt;T</span></tt>,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;::<a href="./value-type.html" class="identifier">value_type</a></span></tt></td>
  75 <td>An integral type</td>
  76 <td>Amortized constant time.</td>
  77 </tr>
  78 </tbody>
  79 </table>
  80 </div>
  81 <div class="section" id="id42">
  82 <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
  83 <pre class="literal-block">
  84 typedef seq_c&lt;T,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub>&gt; s;
  85 typedef seq<em>n</em>_c&lt;T,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub>&gt; s;
  86 </pre>
  87 <table class="docutils field-list" frame="void" rules="none">
  88 <col class="field-name" />
  89 <col class="field-body" />
  90 <tbody valign="top">
  91 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">s</span></tt> is a sequence <tt class="literal"><span class="pre">seq</span></tt> of integral constant wrappers <tt class="literal"><span class="pre"><a href="./integral-c.html" class="identifier">integral_c</a>&lt;T,</span></tt><em>c</em><sub>1</sub><tt class="literal"><span class="pre">&gt;</span></tt>,
  92 <tt class="literal"><span class="pre"><a href="./integral-c.html" class="identifier">integral_c</a>&lt;T,</span></tt><em>c</em><sub>2</sub><tt class="literal"><span class="pre">&gt;</span></tt>, ... <tt class="literal"><span class="pre"><a href="./integral-c.html" class="identifier">integral_c</a>&lt;T,</span></tt><em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt>.</td>
  93 </tr>
  94 <tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span> <span class="pre">==</span> <span class="pre">n</span></tt>.<!-- .. parsed-literal::
  95
  96 BOOST_MPL_ASSERT_RELATION(( at_c<v,0>::type::value,==,\ |c1| ));
  97 BOOST_MPL_ASSERT_RELATION(( at_c<v,1>::type::value,==,\ |c2| ));
  98 ...
  99 BOOST_MPL_ASSERT_RELATION(( at_c<v,\ *n*>::type::value,==,\ |cn| )); -->
 100 </td>
 101 </tr>
 102 </tbody>
 103 </table>
 104 <!-- .......................................................................... -->
 105 <pre class="literal-block">
 106 typedef seq_c&lt;T,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub>&gt;::type s;
 107 typedef seq<em>n</em>_c&lt;T,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub>&gt;::type s;
 108 </pre>
 109 <table class="docutils field-list" frame="void" rules="none">
 110 <col class="field-name" />
 111 <col class="field-body" />
 112 <tbody valign="top">
 113 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">s</span></tt> is identical to
 114 <tt class="literal"><span class="pre">seq</span></tt><em>n</em><tt class="literal"><span class="pre">&lt;</span></tt><tt class="literal"><span class="pre"><a href="./integral-c.html" class="identifier">integral_c</a>&lt;T,</span></tt><em>c</em><sub>1</sub><tt class="literal"><span class="pre">&gt;</span></tt>,<tt class="literal"><span class="pre"><a href="./integral-c.html" class="identifier">integral_c</a>&lt;T,</span></tt><em>c</em><sub>2</sub><tt class="literal"><span class="pre">&gt;</span></tt>,
 115 ... <tt class="literal"><span class="pre"><a href="./integral-c.html" class="identifier">integral_c</a>&lt;T,</span></tt><em>c</em><sub>n</sub><tt class="literal"><span class="pre">&gt;</span></tt> <tt class="literal"><span class="pre">&gt;</span></tt>.</td>
 116 </tr>
 117 </tbody>
 118 </table>
 119 <!-- .......................................................................... -->
 120 <pre class="literal-block">
 121 typedef seq_c&lt;T,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub>&gt;::<a href="./value-type.html" class="identifier">value_type</a> t;
 122 typedef seq<em>n</em>_c&lt;T,<em>c</em><sub>1</sub>,<em>c</em><sub>2</sub>,... <em>c</em><sub>n</sub>&gt;::<a href="./value-type.html" class="identifier">value_type</a> t;
 123 </pre>
 124 <table class="docutils field-list" frame="void" rules="none">
 125 <col class="field-name" />
 126 <col class="field-body" />
 127 <tbody valign="top">
 128 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">is_same&lt;t,T&gt;::value</span> <span class="pre">==</span> <span class="pre">true</span></tt>.</td>
 129 </tr>
 130 </tbody>
 131 </table>
 132 </div>
 133 <div class="section" id="id43">
 134 <h3><a class="subsection-title" href="#models" name="models">Models</a></h3>
 135 <ul class="simple">
 136 <li><a class="reference internal" href="./vector-c.html">vector_c</a></li>
 137 <li><a class="reference internal" href="./list-c.html">list_c</a></li>
 138 <li><a class="reference internal" href="./set-c.html">set_c</a></li>
 139 </ul>
 140 </div>
 141 <div class="section" id="id44">
 142 <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
 143 <p><a class="reference internal" href="./sequences.html">Sequences</a>, <a class="reference internal" href="./variadic-sequence.html">Variadic Sequence</a>, <a class="reference internal" href="./integral-constant.html">Integral Constant</a></p>
 144 <!-- Sequences/Concepts//Variadic Sequence |100 -->
 145 </div>
 146 </div>
 147
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 150 <td><div class="copyright-footer"><div class="copyright">Copyright ©  2001-2009 Aleksey Gurtovoy and David Abrahams</div>
 151 Distributed under the Boost Software License, Version 1.0. (See accompanying
 152 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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