| Brian Silverman | f27e085 | 2018-08-04 23:56:45 -0700 | [diff] [blame^] | 1 | <html> |
| 2 | <head> |
| 3 | <title>BOOST_PP_LIST_ENUM</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_LIST_ENUM</b> macro converts a <i>list</i> to a comma-separated list. |
| 9 | </div> |
| 10 | <h4>Usage</h4> |
| 11 | <div class="code"> |
| 12 | <b>BOOST_PP_LIST_ENUM</b>(<i>list</i>) |
| 13 | </div> |
| 14 | <h4>Arguments</h4> |
| 15 | <dl> |
| 16 | <dt>list</dt> |
| 17 | <dd> |
| 18 | The <i>list</i> to be converted. |
| 19 | </dd> |
| 20 | </dl> |
| 21 | <h4>Remarks</h4> |
| 22 | <div> |
| 23 | If <i>list</i> is, for example, (<i>a</i>, (<i>b</i>, (<i>c</i>, <b>BOOST_PP_NIL</b>))), |
| 24 | this macro will produce: |
| 25 | <div> |
| 26 | <i>a</i>, <i>b</i>, <i>c</i> |
| 27 | </div> |
| 28 | </div> |
| 29 | <div> |
| 30 | Previously, this macro could not be used inside <b>BOOST_PP_FOR</b>. |
| 31 | There is no longer any such restriction. |
| 32 | It is more efficient, however, to use <b>BOOST_PP_LIST_ENUM_R</b> in such a situation. |
| 33 | </div> |
| 34 | <h4>See Also</h4> |
| 35 | <ul> |
| 36 | <li><a href="list_enum_r.html">BOOST_PP_LIST_ENUM_R</a></li> |
| 37 | </ul> |
| 38 | <h4>Requirements</h4> |
| 39 | <div> |
| 40 | <b>Header:</b> <a href="../headers/list/enum.html"><boost/preprocessor/list/enum.hpp></a> |
| 41 | </div> |
| 42 | <h4>Sample Code</h4> |
| 43 | <div><pre> |
| 44 | #include <<a href="../headers/list/enum.html">boost/preprocessor/list/enum.hpp</a>> |
| 45 | |
| 46 | #define LIST (w, (x, (y, (z, <a href="nil.html">BOOST_PP_NIL</a>)))) |
| 47 | |
| 48 | <a href="list_enum.html">BOOST_PP_LIST_ENUM</a>(LIST) // expands to w, x, y, z |
| 49 | </pre></div> |
| 50 | <hr size="1"> |
| 51 | <div style="margin-left: 0px;"> |
| 52 | <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> |
| 53 | </br><i>© Copyright Paul Mensonides 2002</i> |
| 54 | </div> |
| 55 | <div style="margin-left: 0px;"> |
| 56 | <p><small>Distributed under the Boost Software License, Version 1.0. (See |
| 57 | accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or |
| 58 | copy at <a href= |
| 59 | "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> |
| 60 | </div> |
| 61 | </body> |
| 62 | </html> |