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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> |
| <div class="code"> |
| <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> |
| </ul> |
| <h4>Requirements</h4> |
| <div> |
| <b>Header:</b> <a href="../headers/punctuation/paren.html"><boost/preprocessor/punctuation/paren.hpp></a> |
| </div> |
| <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> |
| <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> |