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

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   3         <title>BOOST_PP_COMMA</title>
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   8                 The <b>BOOST_PP_COMMA</b> macro expands to a comma.
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  10         <h4>Usage</h4>
  11                 <div class="code">
  12                         <b>BOOST_PP_COMMA</b>()
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  14         <h4>Remarks</h4>
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  16                         The preprocessor interprets commas as argument separators in macro invocations.&nbsp;
  17                         Because of this, commas require special handling.
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  19         <h4>Requirements</h4>
  20                 <div>
  21                         <b>Header:</b> &nbsp;<a href="../headers/punctuation/comma.html">&lt;boost/preprocessor/punctuation/comma.hpp&gt;</a>
  22                 </div>
  23         <h4>Sample Code</h4>
  24 <div><pre>
  25 #include &lt;<a href="../headers/control/if.html">boost/preprocessor/control/if.hpp</a>&gt;
  26 #include &lt;<a href="../headers/facilities/empty.html">boost/preprocessor/facilities/empty.hpp</a>&gt;
  27 #include &lt;<a href="../headers/punctuation/comma.html">boost/preprocessor/punctuation/comma.hpp</a>&gt;
  28
  29 <a href="if.html">BOOST_PP_IF</a>(1, <a href="comma.html">BOOST_PP_COMMA</a>, <a href="empty.html">BOOST_PP_EMPTY</a>)() // expands to ,
  30 </pre></div>
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  33                 <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  34                 </br><i>© Copyright Paul Mensonides 2002</i>
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  37                 <p><small>Distributed under the Boost Software License, Version 1.0. (See
  38                 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  39                 copy at <a href=
  40                 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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