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Boost library as in https://sourceforge.net/projects/boost/files/boost/1.57.0/

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<html> <head> <title>BOOST_PP_SEQ_ELEM</title> <link rel="stylesheet" type="text/css" href="../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>BOOST_PP_SEQ_ELEM</b> macro extracts an element from a <i>seq</i>. </div> <h4> Usage </h4> <div class="code"> <b>BOOST_PP_SEQ_ELEM</b>(<i>i</i>, <i>seq</i>) </div> <h4> Arguments </h4> <dl> <dt>i</dt> <dd> The zero-based index of the element to be extracted. </dd> <dt>seq</dt> <dd> The <i>seq</i> from which an element is to be extracted. </dd> </dl> <h4> Remarks </h4> <div> The index <i>i</i> must be in the range of <i>0</i> to <b>BOOST_PP_SEQ_SIZE</b>(<i>seq</i>) - <i>1</i>. </div> <h4> Requirements </h4> <div> <b>Header:</b> &nbsp;<a href="../headers/seq/elem.html">&lt;boost/preprocessor/seq/elem.hpp&gt;</a> </div> <h4> Sample Code </h4> <div> <pre>#include &lt;<a href="../headers/seq/elem.html">boost/preprocessor/seq/elem.hpp</a>&gt;<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> </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>