1<html> 2 <head> 3 <meta content="text/html; charset=windows-1252" http-equiv="content-type"> 4 <title>BOOST_PP_TUPLE_POP_FRONT</title> 5 <link rel="stylesheet" type="text/css" href="../styles.css"> 6 </head> 7 <body> 8 <div style="margin-left: 0px;"> The <b>BOOST_PP_TUPLE_POP_FRONT</b> macro 9 pops an element from the beginning of a <i>tuple</i>.</div> 10 <h4>Usage</h4> 11 <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> 12 <h4>Arguments</h4> 13 <dl> 14 <dt>tuple</dt> 15 <dd> The <i>tuple</i> to pop an element from.</dd> 16 </dl> 17 <h4>Remarks</h4> 18 <div> This macro returns <i>tuple</i> after removing the first 19 element. If <i>tuple</i> has only a single element, it remains 20 unchanged since a <i>tuple </i>must have at least one element.</div> 21 <div> This macro uses <b>BOOST_PP_REPEAT</b> internally. Therefore, 22 to use the <i>z</i> parameter passed from other macros that use <b>BOOST_PP_REPEAT</b>, 23 see <b>BOOST_PP_TUPLE_POP_FRONT_Z</b> </div> 24 <h4>See Also</h4> 25 <ul> 26 <li><a href="tuple_pop_front_z.html">BOOST_PP_TUPLE_POP_FRONT_Z</a></li> 27 </ul> 28 <h4>Requirements</h4> 29 <div> <b>Header:</b> <a href="../headers/tuple/pop_front.html"><boost/preprocessor/tuple/pop_front.hpp></a> 30 </div> 31 <h4>Sample Code</h4> 32 <div> 33 <pre>#include <<a href="../headers/tuple/pop_front.html">boost/preprocessor/tuple/pop_front.hpp</a>> 34 35#define TUPLE (a, b, c) 36 37<a href="tuple_pop_front.html">BOOST_PP_TUPLE_POP_FRONT</a>(TUPLE) // expands to (b, c) 38</pre></div> 39 <hr size="1"> 40 <div style="margin-left: 0px;"> <i>� Copyright Edward Diener 2013</i> </div> 41 <div style="margin-left: 0px;"> 42 <p><small>Distributed under the Boost Software License, Version 1.0. (See 43 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> 44 or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> 45 </div> 46 </body> 47</html> 48