ceph/src/boost/libs/preprocessor/doc/ref/seq_first_n.html

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   3         <title>BOOST_PP_SEQ_FIRST_N</title>
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   8                         The <b>BOOST_PP_SEQ_FIRST_N</b> macro expands to a <i>seq</i> of the first <i>n</i>
   9                         elements of a <i>seq</i>.
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  11                 <h4>
  12                         Usage
  13                 </h4>
  14                 <div class="code">
  15                         <b>BOOST_PP_SEQ_FIRST_N</b>(<i>n</i>, <i>seq</i>)
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  17                 <h4>
  18                         Arguments
  19                 </h4>
  20                 <dl>
  21                         <dt>n</dt>
  22                         <dd>
  23                                 The number of elements to extract.
  24                         </dd>
  25                         <dt>seq</dt>
  26                         <dd>
  27                                 The <i>seq</i> from which the elements are extracted.
  28                         </dd>
  29                 </dl>
  30                 <h4>
  31                         Remarks
  32                 </h4>
  33                 <div>
  34                         This macro extracts <i>n</i> elements from the beginning of <i>seq</i> and
  35                         returns them as a new <i>seq</i>
  36                 </div>
  37                 <h4>
  38                         See Also
  39                 </h4>
  40                 <ul>
  41                         <li>
  42                                 <a href="seq_rest_n.html">BOOST_PP_SEQ_REST_N</a></li>
  43                 </ul>
  44                 <h4>
  45                         Requirements
  46                 </h4>
  47                 <div>
  48                         <b>Header:</b> &nbsp;<a href="../headers/seq/first_n.html">&lt;boost/preprocessor/seq/first_n.hpp&gt;</a>
  49                 </div>
  50                 <h4>
  51                         Sample Code
  52                 </h4>
  53                 <div>
  54                         <pre>#include &lt;<a href="../headers/seq/first_n.html">boost/preprocessor/seq/first_n.hpp</a>&gt;<br><br>#define SEQ (a)(b)(c)(d)(e)<br><br><a href="seq_first_n.html">BOOST_PP_SEQ_FIRST_N</a>(2, SEQ) // expands to (a)(b)<br></pre>
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  58                 <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  59                 <br><i>© Copyright Paul Mensonides 2002</i>
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  62                 <p><small>Distributed under the Boost Software License, Version 1.0. (See
  63                 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  64                 copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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