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<html> <head> <title>BOOST_PP_COMMA</title> <link rel="stylesheet" type="text/css" href="../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>BOOST_PP_COMMA</b> macro expands to a comma. </div> <h4>Usage</h4> <div class="code"> <b>BOOST_PP_COMMA</b>() </div> <h4>Remarks</h4> <div> The preprocessor interprets commas as argument separators in macro invocations. Because of this, commas require special handling. </div> <h4>Requirements</h4> <div> <b>Header:</b> <a href="../headers/punctuation/comma.html"><boost/preprocessor/punctuation/comma.hpp></a> </div> <h4>Sample Code</h4> <div><pre> #include <<a href="../headers/control/if.html">boost/preprocessor/control/if.hpp</a>> #include <<a href="../headers/facilities/empty.html">boost/preprocessor/facilities/empty.hpp</a>> #include <<a href="../headers/punctuation/comma.html">boost/preprocessor/punctuation/comma.hpp</a>> <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 , </pre></div> <hr size="1"> <div style="margin-left: 0px;"> <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> </br><i>© Copyright Paul Mensonides 2002</i> </div> <div style="margin-left: 0px;"> <p><small>Distributed under the Boost Software License, Version 1.0. (See accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or copy at <a href= "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> </div> </body> </html>
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