| Brian Silverman | f27e085 | 2018-08-04 23:56:45 -0700 | [diff] [blame^] | 1 | <html> |
| 2 | <head> |
| 3 | <title>BOOST_PP_NIL</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_NIL</b> identifier is reserved by the library to indicate a non-macro. |
| 9 | </div> |
| 10 | <h4>Usage</h4> |
| 11 | <div class="code"> |
| 12 | <b>BOOST_PP_NIL</b> |
| 13 | </div> |
| 14 | <h4>Remarks</h4> |
| 15 | <div> |
| 16 | This identifier is <i>not</i> defined. |
| 17 | Its purpose is to <i>not be a macro</i>. |
| 18 | It is also used to terminate a <i>list</i>. |
| 19 | </div> |
| 20 | <h4>Sample Code</h4> |
| 21 | <div><pre> |
| 22 | #include <<a href="../headers/list/adt.html">boost/preprocessor/list/adt.hpp</a>> |
| 23 | |
| 24 | #define LIST (x, (y, (z, <a href="nil.html">BOOST_PP_NIL</a>))) |
| 25 | |
| 26 | <a href="list_first.html">BOOST_PP_LIST_FIRST</a>(x) // expands to x |
| 27 | <a href="list_rest.html">BOOST_PP_LIST_REST</a>(x) // expands to (y, (z, <a href="nil.html">BOOST_PP_NIL</a>)) |
| 28 | </pre></div> |
| 29 | <hr size="1"> |
| 30 | <div style="margin-left: 0px;"> |
| 31 | <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> |
| 32 | </br><i>© Copyright Paul Mensonides 2002</i> |
| 33 | </div> |
| 34 | <div style="margin-left: 0px;"> |
| 35 | <p><small>Distributed under the Boost Software License, Version 1.0. (See |
| 36 | accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or |
| 37 | copy at <a href= |
| 38 | "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> |
| 39 | </div> |
| 40 | </body> |
| 41 | </html> |