<html> <head> <title>BOOST_PP_NIL</title> <link rel="stylesheet" type="text/css" href="../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>BOOST_PP_NIL</b> identifier is reserved by the library to indicate a non-macro. </div> <h4>Usage</h4> <div class="code"> <b>BOOST_PP_NIL</b> </div> <h4>Remarks</h4> <div> This identifier is <i>not</i> defined. Its purpose is to <i>not be a macro</i>. It is also used to terminate a <i>list</i>. </div> <h4>Sample Code</h4> <div><pre> #include <<a href="../headers/list/adt.hpp.html">boost/preprocessor/list/adt.hpp</a>> #define LIST (x, (y, (z, <a href="nil.html">BOOST_PP_NIL</a>))) <a href="list_first.html">BOOST_PP_LIST_FIRST</a>(x) // expands to x <a href="list_rest.html">BOOST_PP_LIST_REST</a>(x) // expands to (y, (z, <a href="nil.html">BOOST_PP_NIL</a>)) </pre></div> </body> </html>
