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Boost library as in https://sourceforge.net/projects/boost/files/boost/1.57.0/

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<html> <head> <title>BOOST_PP_TUPLE_TO_ARRAY</title> <link rel="stylesheet" type="text/css" href="../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>BOOST_PP_TUPLE_TO_ARRAY</b> macro converts a <i>tuple</i> to an <i>array</i>. </div> <h4> Usage </h4> <div class="code"> <b>BOOST_PP_TUPLE_TO_ARRAY</b>(<i>size,tuple</i>)<br> <br> or<br> <br> <b>BOOST_PP_TUPLE_TO_ARRAY</b>(<i>...</i>) <a href="../topics/variadic_macros.html#VNotation" target="_self"><sup>(v)</sup></a><br> </div> <h4> Arguments </h4> <dl> <dt>size</dt> <dd> The size of the <i>tuple</i>.&nbsp; Valid <i>tuple</i> sizes range from <i>1</i> to <b>BOOST_PP_LIMIT_TUPLE</b>. <br> </dd> <dt>tuple</dt> <dd> The <i>tuple</i> to be converted.</dd> </dl> <h4>Remarks</h4> <div> The <i>size</i> argument must be the actual size of the <i>tuple</i>.<br> <br> You can invoke the variadic version <a href="../topics/variadic_macros.html#VNotation" target="_self"><sup>(v)</sup></a> as BOOST_PP_TUPLE_TO_ARRAY(<i>tuple</i>) or BOOST_PP_TUPLE_TO_ARRAY(<i>size</i>,<i>tuple</i>).<a href="../headers/seq/to_array.html"></a> </div> <h4> Requirements </h4> <div> <b>Header:</b> &nbsp;<a href="../headers/tuple/to_array.html">&lt;boost/preprocessor/tuple/to_array.hpp&gt;</a> </div> <h4> Sample Code </h4> <div> <pre>#include &lt;<a href="../headers/tuple/to_array.html">boost/preprocessor/tuple/to_array.hpp</a>&gt;<br><br>#define TUPLE (a,b,c)<br><br><a href="tuple_to_array.html">BOOST_PP_TUPLE_TO_ARRAY</a>(3,TUPLE) // expands to (3, (a, b, c))<br><br>// or for the variadic version <a href="../topics/variadic_macros.html#VNotation" target="_self"><sup>(v)</sup></a><br><br><a href="tuple_to_array.html">BOOST_PP_TUPLE_TO_ARRAY</a>(TUPLE) // expands to (3, (a, b, c))<br></pre> </div> <hr size="1"> <div style="margin-left: 0px;"> <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>