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preliminary set support

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[SVN r15908]
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Paul Mensonides
2002-10-13 05:47:23 +00:00
parent b2bd498a4f
commit 33daabd87d
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<html>
<head>
<title>BOOST_PP_SET_HEAD</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;">
The <b>BOOST_PP_SET_HEAD</b> macro expands to the first element in a <i>set</i>.
</div>
<h4>Usage</h4>
<div class="code">
<b>BOOST_PP_SET_HEAD</b>(<i>set</i>)
</div>
<h4>Arguments</h4>
<dl>
<dt>set</dt>
<dd>
The <i>set</i> from which the first element is extracted.
</dd>
</dl>
<h4>See Also</h4>
<ul>
<li><a href="set_tail.html">BOOST_PP_SET_TAIL</a></li>
</ul>
<h4>Requirements</h4>
<div>
<b>Header:</b> &nbsp;<a href="../headers/set/set.hpp.html">&lt;boost/preprocessor/set/set.hpp&gt;</a>
</div>
<h4>Sample Code</h4>
<div><pre>
#include &lt;<a href="../headers/set/set.hpp.html">boost/preprocessor/set/set.hpp</a>&gt;
#define SET (a)(b)(c)
<a href="set_head.html">BOOST_PP_SET_HEAD</a>(SET) // expands to a
<a href="set_tail.html">BOOST_PP_SET_TAIL</a>(SET) // expands to (b)(c)
</pre></div>
</body>
</html>