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<html>
<head>
<title>BOOST_PP_SEQ_FIRST_N</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;">
The <b>BOOST_PP_SEQ_FIRST_N</b> macro expands to a <i>seq</i> of the first <i>n</i>
elements of a <i>seq</i>.
</div>
<h4>
Usage
</h4>
<div class="code">
<b>BOOST_PP_SEQ_FIRST_N</b>(<i>n</i>, <i>list</i>)
</div>
<h4>
Arguments
</h4>
<dl>
<dt>n</dt>
<dd>
The number of elements to extract.
</dd>
<dt>list</dt>
<dd>
The <i>seq</i> from which the elements are extracted.
</dd>
</dl>
<h4>
Remarks
</h4>
<div>
This macro extracts <i>n</i> elements from the beginning of <i>seq</i> and
returns them as a new <i>seq</i>
</div>
<h4>
See Also
</h4>
<ul>
<li>
<a href="seq_rest_n.html">BOOST_PP_SEQ_REST_N</a></li>
</ul>
<h4>
Requirements
</h4>
<div>
<b>Header:</b> <a href="../headers/seq/first_n.html"><boost/preprocessor/seq/first_n.hpp></a>
</div>
<h4>
Sample Code
</h4>
<div>
<pre>
#include <<a href="../headers/seq/first_n.html">boost/preprocessor/seq/first_n.hpp</a>>
#define SEQ (a)(b)(c)(d)(e)
<a href="seq_first_n.html">BOOST_PP_SEQ_FIRST_N</a>(2, SEQ) // expands to (a)(b)
</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>
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