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<html> <head> <title>BOOST_PP_CAT</title> <link rel="stylesheet" type="text/css" href="../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>BOOST_PP_CAT</b> macro concatenates its arguments after they have been expanded. </div> <h4>Usage</h4> <div class="code"> <b>BOOST_PP_CAT</b>(<i>a</i>, <i>b</i>) </div> <h4>Arguments</h4> <dl> <dt>a</dt> <dd> The left operand of the concatenation. </dd> <dt>b</dt> <dd> The right operand of the concatenation. </dd> </dl> <h4>Remarks</h4> <div> The preprocessor token-pasting operator (<b>##</b>) prevents arguments from expanding. This macro allows its arguments to expand before concatenation. </div> <div> Concatenation must not result in an invocation of a macro that uses <b>BOOST_PP_CAT</b>. If that happens, <b>BOOST_PP_CAT</b> will not expand the second time. </div> <!-- <h4>See Also</h4> --> <h4>Requirements</h4> <div> <b>Header:</b> <a href="../headers/cat.html"><boost/preprocessor/cat.hpp></a> </div> <h4>Sample Code</h4> <div><pre> #include <<a href="../headers/cat.html">boost/preprocessor/cat.hpp</a>> <a href="cat.html">BOOST_PP_CAT</a>(x, <a href="cat.html">BOOST_PP_CAT</a>(y, z)) // expands to xyz </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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