| 1 | <html> |
|---|
| 2 | <head> |
|---|
| 3 | <title>BOOST_PP_INTERCEPT</title> |
|---|
| 4 | <link rel="stylesheet" type="text/css" href="../styles.css"> |
|---|
| 5 | </head> |
|---|
| 6 | <body> |
|---|
| 7 | <div style="margin-left: 0px;"> |
|---|
| 8 | The <b>BOOST_PP_INTERCEPT</b> macro intercepts a numeric concatenation and expands to nothing. |
|---|
| 9 | </div> |
|---|
| 10 | <h4>Usage</h4> |
|---|
| 11 | <div class="code"> |
|---|
| 12 | <b>BOOST_PP_INTERCEPT</b> |
|---|
| 13 | </div> |
|---|
| 14 | <h4>Remarks</h4> |
|---|
| 15 | <div> |
|---|
| 16 | This macro is used to intercept concatenations performed by various other library constructs. |
|---|
| 17 | It is typically used after other text to prevent eat the concatenation expand to nothing. |
|---|
| 18 | This macro can only intercept integer constants in the range of <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>. |
|---|
| 19 | </div> |
|---|
| 20 | <h4>See Also</h4> |
|---|
| 21 | <ul> |
|---|
| 22 | <li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li> |
|---|
| 23 | </ul> |
|---|
| 24 | <h4>Requirements</h4> |
|---|
| 25 | <div> |
|---|
| 26 | <b>Header:</b> <a href="../headers/facilities/intercept.html"><boost/preprocessor/facilities/intercept.hpp></a> |
|---|
| 27 | </div> |
|---|
| 28 | <h4>Sample Code</h4> |
|---|
| 29 | <div><pre> |
|---|
| 30 | #include <<a href="../headers/facilities/intercept.html">boost/preprocessor/facilities/intercept.hpp</a>> |
|---|
| 31 | #include <<a href="../headers/repetition/enum_binary_params.html">boost/preprocessor/repetition/enum_binary_params.hpp</a>> |
|---|
| 32 | |
|---|
| 33 | <a href="enum_binary_params.html">BOOST_PP_ENUM_BINARY_PARAMS</a>(3, class T, = U) |
|---|
| 34 | // expands to class T0 = U0, class T1 = U1, class T2 = U2 |
|---|
| 35 | |
|---|
| 36 | <a href="enum_binary_params.html">BOOST_PP_ENUM_BINARY_PARAMS</a>(3, class T, = int <a href="intercept.html">BOOST_PP_INTERCEPT</a>) |
|---|
| 37 | // expands to class T0 = int, class T1 = int, class T2 = int |
|---|
| 38 | </pre></div> |
|---|
| 39 | <hr size="1"> |
|---|
| 40 | <div style="margin-left: 0px;"> |
|---|
| 41 | <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> |
|---|
| 42 | </br><i>© Copyright Paul Mensonides 2002</i> |
|---|
| 43 | </div> |
|---|
| 44 | <div style="margin-left: 0px;"> |
|---|
| 45 | <p><small>Distributed under the Boost Software License, Version 1.0. (See |
|---|
| 46 | accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or |
|---|
| 47 | copy at <a href= |
|---|
| 48 | "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> |
|---|
| 49 | </div> |
|---|
| 50 | </body> |
|---|
| 51 | </html> |
|---|
