libs/preprocessor/doc/ref/variadic_size.html

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   3   <title>BOOST_PP_VARIADIC_SIZE</title>
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   7 <div style="margin-left: 0px;"> The <b>BOOST_PP_VARIADIC_SIZE</b> variadic macro
   8 expands to the size of the <i>variadic data </i>passed to it. </div>
   9 <h4>Usage</h4>
  10 <div class="code"> <b>BOOST_PP_VARIADIC_SIZE</b>(<i>...</i>) <a href="../topics/variadic_macros.html#VNotation" target="_self"><sup>(v)</sup></a><br>
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  12 <h4>Arguments</h4>
  13 <dl>
  14   <dt>...<br>
  15 </dt>
  16   <dd>&nbsp; <i>Variadic data </i>whose size is to be extracted. </dd>
  17 </dl>
  18 <h4>Requirements</h4>
  19 <div> <b>Header:</b> &nbsp;<a href="../headers/variadic/size.html">&lt;boost/preprocessor/variadic/size.hpp&gt;</a>
  20 </div>
  21 <h4>Sample Code</h4>
  22 <div>
  23 <pre>#include &lt;<a href="../headers/variadic/size.html">boost/preprocessor/variadic/size.hpp</a>&gt;<br><br>#define VAR_DATA x, y, z<br><br><a href="variadic_size.html">BOOST_PP_VARIADIC_SIZE</a>(VAR_DATA) // expands to 3<br></pre>
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  26 <div style="margin-left: 0px;"> <i></i><i>© Copyright Edward Diener 2011,2013</i> </div>
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  28 <p><small>Distributed under the Boost Software License, Version 1.0.
  29 (See accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
  30 or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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