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

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   3         <title>BOOST_PP_NIL</title>
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   8                 The <b>BOOST_PP_NIL</b> identifier is reserved by the library to indicate a non-macro.
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  10         <h4>Usage</h4>
  11                 <div class="code">
  12                         <b>BOOST_PP_NIL</b>
  13                 </div>
  14         <h4>Remarks</h4>
  15                 <div>
  16                         This identifier is <i>not</i> defined.&nbsp;
  17                         Its purpose is to <i>not be a macro</i>.&nbsp;
  18                         It is also used to terminate a <i>list</i>.
  19                 </div>
  20         <h4>Sample Code</h4>
  21 <div><pre>
  22 #include &lt;<a href="../headers/list/adt.html">boost/preprocessor/list/adt.hpp</a>&gt;
  23
  24 #define LIST (x, (y, (z, <a href="nil.html">BOOST_PP_NIL</a>)))
  25
  26 <a href="list_first.html">BOOST_PP_LIST_FIRST</a>(x) // expands to x
  27 <a href="list_rest.html">BOOST_PP_LIST_REST</a>(x) // expands to (y, (z, <a href="nil.html">BOOST_PP_NIL</a>))
  28 </pre></div>
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  31                 <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  32                 </br><i>© Copyright Paul Mensonides 2002</i>
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  35                 <p><small>Distributed under the Boost Software License, Version 1.0. (See
  36                 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  37                 copy at <a href=
  38                 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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