libs/preprocessor/doc/ref/tuple_size.html


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

<html>
<head>
  <title>BOOST_PP_TUPLE_SIZE</title>
  <link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;"> The <b>BOOST_PP_TUPLE_SIZE</b> macro
expands to the size of the <i>tuple</i> passed to it. </div>
<h4>Usage</h4>
<div class="code"> <b>BOOST_PP_TUPLE_SIZE</b>(<i>tuple</i>) <a href="../topics/variadic_macros.html#VNotation" target="_self"><sup>(v)</sup></a><br>
  </div>
<h4>Arguments</h4>
<dl>
  <dt>tuple</dt>
  <dd> A <i>tuple</i> whose size is to be extracted. </dd>
</dl>
<h4>Requirements</h4>
<div> <b>Header:</b> &nbsp;<a href="../headers/tuple/size.html">&lt;boost/preprocessor/tuple/size.hpp&gt;</a>
</div>
<h4>Sample Code</h4>
<div>
<pre>#include &lt;<a href="../headers/tuple/size.html">boost/preprocessor/tuple/size.hpp</a>&gt;<br><br>#define TUPLE (x, y, z)<br><br><a href="tuple_size.html">BOOST_PP_TUPLE_SIZE</a>(TUPLE) // expands to 3<br></pre>
</div>
<hr size="1">
<div style="margin-left: 0px;"> <i></i><i>© Copyright Edward Diener 2011,2013</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>