| <html> |
| <head> |
| <title>BOOST_PP_LIST_SIZE_D</title> |
| <link rel="stylesheet" type="text/css" href="../styles.css"> |
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| <body> |
| <div style="margin-left: 0px;"> |
| The <b>BOOST_PP_LIST_SIZE_D</b> macro expands to the size of a <i>list</i>. |
| It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency. |
| </div> |
| <h4>Usage</h4> |
| <div class="code"> |
| <b>BOOST_PP_LIST_SIZE_D</b>(<i>d</i>, <i>list</i>) |
| </div> |
| <h4>Arguments</h4> |
| <dl> |
| <dt>d</dt> |
| <dd> |
| The next available <b>BOOST_PP_WHILE</b> iteration. |
| </dd> |
| <dt>list</dt> |
| <dd> |
| A <i>list</i> whose size is to be calculated. |
| </dd> |
| </dl> |
| <h4>See Also</h4> |
| <ul> |
| <li><a href="list_size.html">BOOST_PP_LIST_SIZE</a></li> |
| </ul> |
| <h4>Requirements</h4> |
| <div> |
| <b>Header:</b> <a href="../headers/list/size.html"><boost/preprocessor/list/size.hpp></a> |
| </div> |
| <h4>Sample Code</h4> |
| <div><pre> |
| #include <<a href="../headers/arithmetic/add.html">boost/preprocessor/arithmetic/add.hpp</a>> |
| #include <<a href="../headers/list/fold_left.html">boost/preprocessor/list/fold_left.hpp</a>> |
| #include <<a href="../headers/list/size.html">boost/preprocessor/list/size.hpp</a>> |
| |
| #define L1 (a, (b, (c, <a href="nil.html">BOOST_PP_NIL</a>))) |
| #define L2 (x, (y, <a href="nil.html">BOOST_PP_NIL</a>)) |
| #define L3 (p, (q, <a href="nil.html">BOOST_PP_NIL</a>)) |
| |
| #define LIST (L1, (L2, (L3, <a href="nil.html">BOOST_PP_NIL</a>))) |
| |
| #define OP(d, state, x) \ |
| <a href="add_d.html">BOOST_PP_ADD_D</a>( \ |
| d, state, \ |
| <a href="list_size_d.html">BOOST_PP_LIST_SIZE_D</a>(d, x) \ |
| ) \ |
| /**/ |
| |
| <a href="list_fold_left.html">BOOST_PP_LIST_FOLD_LEFT</a>(OP, 0, LIST) // expands to 7 |
| </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> |
