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<html>
<head>
<title>BOOST_PP_LIST_IS_NIL</title>
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<div style="margin-left: 0px;">
The <b>BOOST_PP_LIST_IS_NIL</b> macro is a predicate that determines if a <i>list</i> is nil.
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<h4>Usage</h4>
<div class="code">
<b>BOOST_PP_LIST_IS_NIL</b>(<i>list</i>)
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<h4>Arguments</h4>
<dl>
<dt>list</dt>
<dd>
A <i>list</i>.
</dd>
</dl>
<h4>Remarks</h4>
<div>
If <i>list</i> is nil, this macro expands to <i>1</i>.
Otherwise, it expands to <i>0</i>.
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<h4>Requirements</h4>
<div>
<b>Header:</b> <a href="../headers/list/adt.html"><boost/preprocessor/list/adt.hpp></a>
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<h4>Sample Code</h4>
<div><pre>
#include <<a href="../headers/list/adt.html">boost/preprocessor/list/adt.hpp</a>>
#define LIST (a, <a href="nil.html">BOOST_PP_NIL</a>)
<a href="list_is_nil.html">BOOST_PP_LIST_IS_NIL</a>(LIST) // expands to 0
<a href="list_is_nil.html">BOOST_PP_LIST_IS_NIL</a>(<a href="list_rest.html">BOOST_PP_LIST_REST</a>(LIST)) // expands to 1
</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>
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</body>
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