<html> <head> <title>facilities/empty.hpp</title> <link rel="stylesheet" type="text/css" href="../../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>facilities/empty.hpp</b> header defines a nullary macro that expands to nothing. </div> <h4>Usage</h4> <div class="code"> #include <b><boost/preprocessor/facilities/empty.hpp></b> </div> <h4>Contents</h4> <ul> <li><a href="../../ref/empty.html">BOOST_PP_EMPTY</a></li> </ul> </body> </html>