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  3. <title>BOOST_PP_NIL</title>
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  8. The <b>BOOST_PP_NIL</b> identifier is reserved by the library to indicate a non-macro.
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  10. <h4>Usage</h4>
  11. <div class="code">
  12. <b>BOOST_PP_NIL</b>
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  14. <h4>Remarks</h4>
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  16. This identifier is <i>not</i> defined.&nbsp;
  17. Its purpose is to <i>not be a macro</i>.&nbsp;
  18. It is also used to terminate a <i>list</i>.
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  20. <h4>Sample Code</h4>
  21. <div><pre>
  22. #include &lt;<a href="../headers/list/adt.html">boost/preprocessor/list/adt.hpp</a>&gt;
  23. #define LIST (x, (y, (z, <a href="nil.html">BOOST_PP_NIL</a>)))
  24. <a href="list_first.html">BOOST_PP_LIST_FIRST</a>(x) // expands to x
  25. <a href="list_rest.html">BOOST_PP_LIST_REST</a>(x) // expands to (y, (z, <a href="nil.html">BOOST_PP_NIL</a>))
  26. </pre></div>
  27. <hr size="1">
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  29. <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  30. </br><i>© Copyright Paul Mensonides 2002</i>
  31. </div>
  32. <div style="margin-left: 0px;">
  33. <p><small>Distributed under the Boost Software License, Version 1.0. (See
  34. accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  35. copy at <a href=
  36. "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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