| Brian Silverman | f27e085 | 2018-08-04 23:56:45 -0700 | [diff] [blame^] | 1 | <html> |
| 2 | <head> |
| 3 | <title>BOOST_PP_SEQ_ELEM</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_SEQ_ELEM</b> macro extracts an element from a <i>seq</i>. |
| 9 | </div> |
| 10 | <h4> |
| 11 | Usage |
| 12 | </h4> |
| 13 | <div class="code"> |
| 14 | <b>BOOST_PP_SEQ_ELEM</b>(<i>i</i>, <i>seq</i>) |
| 15 | </div> |
| 16 | <h4> |
| 17 | Arguments |
| 18 | </h4> |
| 19 | <dl> |
| 20 | <dt>i</dt> |
| 21 | <dd> |
| 22 | The zero-based index of the element to be extracted. |
| 23 | </dd> |
| 24 | <dt>seq</dt> |
| 25 | <dd> |
| 26 | The <i>seq</i> from which an element is to be extracted. |
| 27 | </dd> |
| 28 | </dl> |
| 29 | <h4> |
| 30 | Remarks |
| 31 | </h4> |
| 32 | <div> |
| 33 | The index <i>i</i> must be in the range of <i>0</i> to <b>BOOST_PP_SEQ_SIZE</b>(<i>seq</i>) |
| 34 | - <i>1</i>. |
| 35 | </div> |
| 36 | <h4> |
| 37 | Requirements |
| 38 | </h4> |
| 39 | <div> |
| 40 | <b>Header:</b> <a href="../headers/seq/elem.html"><boost/preprocessor/seq/elem.hpp></a> |
| 41 | </div> |
| 42 | <h4> |
| 43 | Sample Code |
| 44 | </h4> |
| 45 | <div> |
| 46 | <pre>#include <<a href="../headers/seq/elem.html">boost/preprocessor/seq/elem.hpp</a>><br><br><a href="seq_elem.html">BOOST_PP_SEQ_ELEM</a>(1, (a)(b)(c)) // expands to b<br><br>#define SEQ \<br> (0)(1)(2)(3)(4)(5)(6)(7)(8)(9) \<br> (10)(11)(12)(13)(14)(15)(16)(17)(18)(19) \<br> (20)(21)(22)(23)(24)(25)(26)(27)(28)(29) \<br> (30)(31)(32)(33)(34)(35)(36)(37)(38)(39) \<br> (40)(41)(42)(43)(44)(45)(46)(47)(48)(49) \<br> (50)(51)(52)(53)(54)(55)(56)(57)(58)(59) \<br> (60)(61)(62)(63)(64)(65)(66)(67)(68)(69) \<br> (70)(71)(72)(73)(74)(75)(76)(77)(78)(79) \<br> (80)(81)(82)(83)(84)(85)(86)(87)(88)(89) \<br> (90)(91)(92)(93)(94)(95)(96)(97)(98)(99) \<br> /**/<br><br><a href="seq_elem.html">BOOST_PP_SEQ_ELEM</a>(88, SEQ) // expands to 88<br></pre> |
| 47 | </div> |
| 48 | <hr size="1"> |
| 49 | <div style="margin-left: 0px;"> |
| 50 | <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> |
| 51 | <br><i>© Copyright Paul Mensonides 2002</i> |
| 52 | </div> |
| 53 | <div style="margin-left: 0px;"> |
| 54 | <p><small>Distributed under the Boost Software License, Version 1.0. (See |
| 55 | accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or |
| 56 | copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> |
| 57 | </div> |
| 58 | </body> |
| 59 | </html> |