devn00b
/
EQ2EMu


			
				
					
						
						
							1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162
							<html>
  <head>
    <meta content="text/html; charset=windows-1252" http-equiv="content-type">
    <title>BOOST_PP_LIST_TO_TUPLE_R</title>
    <link rel="stylesheet" type="text/css" href="../styles.css">
  </head>
  <body>
    <div style="margin-left:  0px;"> The <b>BOOST_PP_LIST_TO_TUPLE_R</b> macro
      converts a <i>list</i> to a <i>tuple</i>.&nbsp; It reenters <b>BOOST_PP_FOR</b>
      with maximum efficiency. </div>
    <h4>Usage</h4>
    <div class="code"> <b>BOOST_PP_LIST_TO_TUPLE_R</b>(<i>r</i>, <i>list</i>)
    </div>
    <h4>Arguments</h4>
    <dl>
      <dt>r</dt>
      <dd> The next available <b>BOOST_PP_FOR</b> repetition. </dd>
      <dt>list</dt>
      <dd> The <i>list</i> to be converted. </dd>
    </dl>
    <h4>Remarks</h4>
    <p>&nbsp;&nbsp; If <i>list</i> is, for example, (<i>a</i>, (<i>b</i>, (<i>c</i>,
      <b>BOOST_PP_NIL</b>))), this macro will produce: </p>
    <div>
      <div> (<i>a</i>, <i>b</i>, <i>c</i>)&nbsp;&nbsp; </div>
    </div>
    <h4><span style="font-weight: normal;">&nbsp;&nbsp; If the <i>list</i> to
        be converted is empty, as represented by 'BOOST_PP_NIL', the resulting <i>tuple</i>
        is undefined since a <i>tuple</i> cannot be empty. </span></h4>
    <h4>See Also</h4>
    <ul>
      <li><a href="list_to_tuple.html">BOOST_PP_LIST_TO_TUPLE</a></li>
    </ul>
    <h4>Requirements</h4>
    <div> <b>Header:</b> &nbsp;<a href="../headers/list/to_tuple.html">&lt;boost/preprocessor/list/to_tuple.hpp&gt;</a>
    </div>
    <h4>Sample Code</h4>
    <div>
      <pre>#include &lt;<a href="../headers/list/adt.html">boost/preprocessor/list/adt.hpp</a>&gt;
#include &lt;<a href="../headers/list/to_tuple.html">boost/preprocessor/list/to_tuple.hpp</a>&gt;
#include &lt;<a href="../headers/repetition/for.html">boost/preprocessor/repetition/for.hpp</a>&gt;

#define LIST (x, (y, (z, <a href="nil.html">BOOST_PP_NIL</a>)))

#define PRED(r, state) <a href="list_is_cons.html">BOOST_PP_LIST_IS_CONS</a>(state)
#define OP(r, state) <a href="list_rest.html">BOOST_PP_LIST_REST</a>(state)
#define MACRO(r, state) <a href="list_to_tuple_r.html">BOOST_PP_LIST_TO_TUPLE_R</a>(r, state)

<a href="for.html">BOOST_PP_FOR</a>(LIST, PRED, OP, MACRO)
   // expands to (x, y, z) (y, z) (z)
</pre></div>
    <hr size="1">
    <div style="margin-left: 0px;"> <i>© Copyright <a href="http://www.housemarque.com"
          target="_top">Housemarque Oy</a> 2002</i> <br>
      <i>© Copyright Paul Mensonides 2002</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>