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