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

   1 <html>
   2 <head>
   3         <title>BOOST_PP_LIST_CAT_D</title>
   4         <link rel="stylesheet" type="text/css" href="../styles.css">
   5 </head>
   6 <body>
   7         <div style="margin-left:  0px;">
   8                 The <b>BOOST_PP_LIST_CAT_D</b> macro concatenates all elements in a <i>list</i>.&nbsp;
   9                 It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency.
  10         </div>
  11         <h4>Usage</h4>
  12                 <div class="code">
  13                         <b>BOOST_PP_LIST_CAT_D</b>(<i>d</i>, <i>list</i>)
  14                 </div>
  15         <h4>Arguments</h4>
  16                 <dl>
  17                         <dt>d</dt>
  18                         <dd>
  19                                 The next available <b>BOOST_PP_WHILE</b> iteration.
  20                         </dd>
  21                         <dt>list</dt>
  22                         <dd>
  23                                 The <i>list</i> whose elements are to be concatenated.
  24                         </dd>
  25                 </dl>
  26         <h4>Remarks</h4>
  27                 <div>
  28                         Elements are concatenated left-to-right starting with index <i>0</i>.
  29                 </div>
  30         <h4>See Also</h4>
  31                 <ul>
  32                         <li><a href="list_cat.html">BOOST_PP_LIST_CAT</a></li>
  33                 </ul>
  34         <h4>Requirements</h4>
  35                 <div>
  36                         <b>Header:</b> &nbsp;<a href="../headers/list/cat.html">&lt;boost/preprocessor/list/cat.hpp&gt;</a>
  37         </div>
  38         <h4>Sample Code</h4>
  39 <div><pre>
  40 #include &lt;<a href="../headers/cat.html">boost/preprocessor/cat.hpp</a>&gt;
  41 #include &lt;<a href="../headers/list/cat.html">boost/preprocessor/list/cat.hpp</a>&gt;
  42 #include &lt;<a href="../headers/list/fold_left.html">boost/preprocessor/list/fold_left.hpp</a>&gt;
  43
  44 #define LISTS \
  45    ((a, (b, <a href="nil.html">BOOST_PP_NIL</a>)), \
  46       ((c, (d, <a href="nil.html">BOOST_PP_NIL</a>)), \
  47          ((e, (f, <a href="nil.html">BOOST_PP_NIL</a>)), \
  48             <a href="nil.html">BOOST_PP_NIL</a>))) \
  49    /**/
  50
  51 #define OP(d, state, x) <a href="cat.html">BOOST_PP_CAT</a>(state, <a href="list_cat_d.html">BOOST_PP_LIST_CAT_D</a>(d, x))
  52
  53 <a href="list_fold_left.html">BOOST_PP_LIST_FOLD_LEFT</a>(OP, _, LISTS) // expands to _abcdef
  54 </pre></div>
  55         <hr size="1">
  56         <div style="margin-left: 0px;">
  57                 <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  58                 </br><i>© Copyright Paul Mensonides 2002</i>
  59         </div>
  60         <div style="margin-left: 0px;">
  61                 <p><small>Distributed under the Boost Software License, Version 1.0. (See
  62                 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  63                 copy at <a href=
  64                 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
  65         </div>
  66 </body>
  67 </html>