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- <title>BOOST_PP_LPAREN</title>
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- The <b>BOOST_PP_LPAREN</b> macro expands to a left parenthesis.
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- <h4>Usage</h4>
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- <b>BOOST_PP_LPAREN</b>()
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- <h4>Remarks</h4>
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- The preprocessor interprets parentheses as delimiters in macro invocations.
- Because of this, parentheses require special handling.
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- <h4>See Also</h4>
- <ul>
- <li><a href="rparen.html">BOOST_PP_RPAREN</a></li>
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- <h4>Requirements</h4>
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- <b>Header:</b> <a href="../headers/punctuation/paren.html"><boost/preprocessor/punctuation/paren.hpp></a>
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- <h4>Sample Code</h4>
- <div><pre>
- #include <<a href="../headers/punctuation/paren.html">boost/preprocessor/punctuation/paren.hpp</a>>
- #define X(x) x
- #define MACRO(p, x) X p x )
- MACRO(<a href="lparen.html">BOOST_PP_LPAREN</a>(), abc) // expands to abc
- #define Y(x)
- MACRO((10) Y <a href="lparen.html">BOOST_PP_LPAREN</a>(), result) // expands to 10
- </pre></div>
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- <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>
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- <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>
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