47 lines
1.9 KiB
HTML
47 lines
1.9 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=windows-1252">
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<title>BOOST_PP_VARIADIC_SIZE</title>
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<link rel="stylesheet" type="text/css" href="../styles.css">
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</head>
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<body>
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<div style="margin-left: 0px;"> The <b>BOOST_PP_VARIADIC_SIZE</b>
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variadic macro
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expands to the size of the <i>variadic data </i>passed to it. </div>
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<h4>Usage</h4>
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<div class="code"> <b>BOOST_PP_VARIADIC_SIZE</b>(<i>...</i>) <a
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href="../topics/variadic_macros.html#VNotation" target="_self"><sup>(v)</sup></a><br>
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</div>
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<h4>Arguments</h4>
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<dl>
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<dt>...<br>
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</dt>
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<dd> <i>Variadic data </i>whose size is to be extracted.</dd>
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</dl>
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<h4>Remarks</h4>
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<p> In <a
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href="../topics/variadic_macros.html#C20_Support_For_Variadic_Macros">C++
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20</a> mode the <i>variadic</i> <i>data</i> can be empty and
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the result will be 0.<br>
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</p>
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<h4>Requirements</h4>
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<div> <b>Header:</b> <a href="../headers/variadic/size.html"><boost/preprocessor/variadic/size.hpp></a>
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</div>
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<h4>Sample Code</h4>
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<div>
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<pre>#include <<a href="../headers/variadic/size.html">boost/preprocessor/variadic/size.hpp</a>><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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</div>
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<hr size="1">
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<div style="margin-left: 0px;"> <i></i><i>© Copyright Edward Diener
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2011,2013</i> </div>
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<div style="margin-left: 0px;">
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<p><small>Distributed under the Boost Software License, Version
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1.0.
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(See accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
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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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</div>
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</body>
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</html>
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