52 lines
1.6 KiB
HTML
52 lines
1.6 KiB
HTML
<html>
|
|
<head>
|
|
<title>BOOST_PP_LIST_IS_CONS</title>
|
|
<link rel="stylesheet" type="text/css" href="../styles.css">
|
|
</head>
|
|
<body>
|
|
<div style="margin-left: 0px;">
|
|
The <b>BOOST_PP_LIST_IS_CONS</b> macro is a predicate that determines if a <i>list</i> not nil.
|
|
</div>
|
|
<h4>Usage</h4>
|
|
<div class="code">
|
|
<b>BOOST_PP_LIST_IS_CONS</b>(<i>list</i>)
|
|
</div>
|
|
<h4>Arguments</h4>
|
|
<dl>
|
|
<dt>list</dt>
|
|
<dd>
|
|
A <i>list</i>.
|
|
</dd>
|
|
</dl>
|
|
<h4>Remarks</h4>
|
|
<div>
|
|
If <i>list</i> is non-nil, this macro expands to <i>1</i>.
|
|
Otherwise, it expands to <i>0</i>.
|
|
</div>
|
|
<h4>Requirements</h4>
|
|
<div>
|
|
<b>Header:</b> <a href="../headers/list/adt.html"><boost/preprocessor/list/adt.hpp></a>
|
|
</div>
|
|
<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_cons.html">BOOST_PP_LIST_IS_CONS</a>(LIST) // expands to 1
|
|
<a href="list_is_cons.html">BOOST_PP_LIST_IS_CONS</a>(<a href="list_rest.html">BOOST_PP_LIST_REST</a>(LIST)) // expands to 0
|
|
</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>
|
|
</div>
|
|
</body>
|
|
</html>
|