1<html> 2<head> 3 <title>facilities/check_empty.hpp</title> 4 <link rel="stylesheet" type="text/css" href="../../styles.css"> 5</head> 6<body> 7 <div style="margin-left: 0px;"> 8 The <b>facilities/check_empty.hpp</b> header defines a variadic macro for the C++20 level that checks if its data is empty or not. 9 </div> 10 <h4>Usage</h4> 11 <div class="code"> 12 #include <b><boost/preprocessor/facilities/check_empty.hpp></b> 13 </div> 14 <h4>Contents</h4> 15 <ul> 16 <li><a href="../../ref/check_empty.html">BOOST_PP_CHECK_EMPTY</a> <a href="../../topics/variadic_macros.html#VNotation" target="_self">(v)</a></li> 17 </ul> 18 <hr size="1"> 19 <div style="margin-left: 0px;"> 20 <i></i><i>� Copyright Edward Diener 2019</i> 21 </div> 22 <div style="margin-left: 0px;"> 23 <p><small>Distributed under the Boost Software License, Version 1.0. (See 24 accompanying file <a href="../../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or 25 copy at <a href= 26 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> 27 </div> 28</body> 29</html> 30