forked from boostorg/preprocessor
34 lines
1.1 KiB
HTML
34 lines
1.1 KiB
HTML
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<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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<script language="javascript" type="text/javascript" src="../scripts.js"></script>
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</head>
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<body onload="init('sample');">
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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.hpp.html"><boost/preprocessor/punctuation/comma.hpp></a>
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</div>
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<h4><a class="local" onclick="toggle('sample');" onmouseover="change(this);" onmouseout="revert(this);">Sample Code</a></h4>
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<div id="sample"><pre>
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#include <boost/preprocessor/control/if.hpp>
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#include <boost/preprocessor/facilities/empty.hpp>
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#include <boost/preprocessor/punctuation/comma.hpp>
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BOOST_PP_IF(1, BOOST_PP_COMMA, BOOST_PP_EMPTY)() // expands to ,
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<pre></div>
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</body>
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</html>
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