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43 lines
1.2 KiB
HTML
43 lines
1.2 KiB
HTML
<html>
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<head>
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<title>BOOST_PP_LPAREN</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_LPAREN</b> macro expands to a left parenthesis.
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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_LPAREN</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 parentheses as delimiters in macro invocations.
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Because of this, parentheses require special handling.
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</div>
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<h4>See Also</h4>
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<ul>
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<li><a href="rparen.html">BOOST_PP_RPAREN</a></li>
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</ul>
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<h4>Requirements</h4>
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<div>
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<b>Header:</b> <a href="../headers/punctuation/paren.hpp.html"><boost/preprocessor/punctuation/paren.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/punctuation/paren.hpp>
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#define X(x) x
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#define MACRO(p, x) X p x )
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MACRO(BOOST_PP_LPAREN(), abc) // expands to abc
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#define Y(x)
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MACRO((10) Y BOOST_PP_LPAREN(), result) // expands to 10
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<pre></div>
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</body>
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</html>
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