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[SVN r15198]
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Paul Mensonides
2002-09-08 09:40:56 +00:00
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<html>
<head>
<title>BOOST_PP_LIST_REST_N</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
<script language="javascript" type="text/javascript" src="../scripts.js"></script>
</head>
<body onload="init('sample');">
<div style="margin-left: 0px;">
The <b>BOOST_PP_LIST_REST_N</b> macro expands to a <i>list</i> of all but the first <i>count</i> elements of a <i>list</i>.
</div>
<h4>Usage</h4>
<div class="code">
<b>BOOST_PP_LIST_REST_N</b>(<i>count</i>, <i>list</i>)
</div>
<h4>Arguments</h4>
<dl>
<dt>count</dt>
<dd>
The number of elements to remove from the beginning of <i>list</i>.
</dd>
<dt>list</dt>
<dd>
The <i>list</i> from which the elements are extracted.
</dd>
</dl>
<h4>Remarks</h4>
<div>
This macro removes <i>count</i> elements from the beginning of <i>list</i> and returns the remainder as a <i>list</i>
</div>
<div>
Previously, this macro could not be used inside <b>BOOST_PP_WHILE</b>.&nbsp;
There is no longer any such restriction.&nbsp;
It is more efficient, however, to use <b>BOOST_PP_LIST_REST_N_D</b> in such a situation.
</div>
<h4>See Also</h4>
<ul>
<li><a href="list_rest_n_d.html">BOOST_PP_LIST_REST_N_D</a></li>
</ul>
<h4>Requirements</h4>
<div>
<b>Header:</b> &nbsp;<a href="../headers/list/rest_n.hpp.html">&lt;boost/preprocessor/list/rest_n.hpp&gt;</a>
</div>
<h4><a class="local" onclick="toggle('sample');" onmouseover="change(this);" onmouseout="revert(this);">Sample Code</a></h4>
<div id="sample"><pre>
#include &lt;boost/preprocessor/list/rest_n.hpp&gt;
#define LIST (a, (b, (c, (d, BOOST_PP_NIL))))
BOOST_PP_LIST_REST_N(2, LIST) // expands to (c, (d, BOOST_PP_NIL))
<pre></div>
</body>
</html>