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<html> <head> <meta content="text/html; charset=windows-1252" http-equiv="content-type"> <title>BOOST_PP_TUPLE_POP_FRONT</title> <link rel="stylesheet" type="text/css" href="../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>BOOST_PP_TUPLE_POP_FRONT</b> macro pops an element from the beginning of a <i>tuple</i>.</div> <h4>Usage</h4> <div class="code"> <b>BOOST_PP_TUPLE_POP_FRONT</b>(<i>tuple</i>) <a href="../topics/variadic_macros.html#VNotation"><sup>(v)</sup></a></div> <h4>Arguments</h4> <dl> <dt>tuple</dt> <dd> The <i>tuple</i> to pop an element from.</dd> </dl> <h4>Remarks</h4> <div> This macro returns <i>tuple</i> after removing the first element.&nbsp; If <i>tuple</i> has only a single element, it remains unchanged since a&nbsp;<i>tuple </i>must have at least one element.</div> <div> This macro uses <b>BOOST_PP_REPEAT</b> internally.&nbsp; Therefore, to use the <i>z</i> parameter passed from other macros that use <b>BOOST_PP_REPEAT</b>, see <b>BOOST_PP_TUPLE_POP_FRONT_Z</b> </div> <h4>See Also</h4> <ul> <li><a href="tuple_pop_front_z.html">BOOST_PP_TUPLE_POP_FRONT_Z</a></li> </ul> <h4>Requirements</h4> <div> <b>Header:</b> &nbsp;<a href="../headers/tuple/pop_front.html">&lt;boost/preprocessor/tuple/pop_front.hpp&gt;</a> </div> <h4>Sample Code</h4> <div> <pre>#include &lt;<a href="../headers/tuple/pop_front.html">boost/preprocessor/tuple/pop_front.hpp</a>&gt; #define TUPLE (a, b, c) <a href="tuple_pop_front.html">BOOST_PP_TUPLE_POP_FRONT</a>(TUPLE) // expands to (b, c) </pre></div> <hr size="1"> <div style="margin-left: 0px;"> <i>� Copyright Edward Diener 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>