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<html>
<head>
<title>BOOST_PP_LIST_TRANSFORM_D</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;">
The <b>BOOST_PP_LIST_TRANSFORM_D</b> macro transforms each element in a <i>list</i> according to a supplied transformation.
It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency.
</div>
<h4>Usage</h4>
<div class="code">
<b>BOOST_PP_LIST_TRANSFORM_D</b>(<i>d</i>, <i>op</i>, <i>data</i>, <i>list</i>)
</div>
<h4>Arguments</h4>
<dl>
<dt>d</dt>
<dd>
The next available <b>BOOST_PP_WHILE</b> iteration.
</dd>
<dt>op</dt>
<dd>
A ternary predicate of the form <i>op</i>(<i>d</i>, <i>data</i>, <i>elem</i>).
This transformation is expanded by <b>BOOST_PP_LIST_TRANSFORM</b> for each element in <i>list</i> with the next available <b>BOOST_PP_WHILE</b> iteration,
the auxiliary <i>data</i>, and the current element in <i>list</i>.
</dd>
<dt>data</dt>
<dd>
Auxiliary data passed to <i>pred</i>.
</dd>
<dt>list</dt>
<dd>
The <i>list</i> to be transformed.
</dd>
</dl>
<h4>Remarks</h4>
<div>
This macro expands <i>op</i> for each element in <i>list</i>.
It builds a new <i>list</i> out of the results of each call.
If, for example, <i>list</i> is (<i>a</i>, (<i>b</i>, (<i>c</i>, <b>BOOST_PP_NIL</b>))),
this macro expands to...
<div>
(<i>op</i>(<i>d</i>, <i>data</i>, <i>a</i>), (<i>op</i>(<i>d</i>, <i>data</i>, <i>b</i>), (<i>op</i>(<i>d</i>, <i>data</i>, <i>c</i>), <b>BOOST_PP_NIL</b>)))
</div>
</div>
<h4>See Also</h4>
<ul>
<li><a href="list_transform.html">BOOST_PP_LIST_TRANSFORM</a></li>
</ul>
<h4>Requirements</h4>
<div>
<b>Header:</b> <a href="../headers/list/transform.html"><boost/preprocessor/list/transform.hpp></a>
</div>
<h4>Sample Code</h4>
<div><pre>
#include <<a href="../headers/arithmetic/inc.html">boost/preprocessor/arithmetic/inc.hpp</a>>
#include <<a href="../headers/list/fold_right.html">boost/preprocessor/list/fold_right.hpp</a>>
#include <<a href="../headers/list/transform.html">boost/preprocessor/list/transform.hpp</a>>
#define A (1, (2, (3, (4, <a href="nil.html">BOOST_PP_NIL</a>))))
#define B (A, (A, (A, (A, <a href="nil.html">BOOST_PP_NIL</a>))))
#define OP_T(d, data, x) <a href="inc.html">BOOST_PP_INC</a>(x)
#define OP(d, state, x) (<a href="list_transform_d.html">BOOST_PP_LIST_TRANSFORM_D</a>(d, OP_T, 2, x), state)
<a href="list_fold_right.html">BOOST_PP_LIST_FOLD_RIGHT</a>(OP, <a href="nil.html">BOOST_PP_NIL</a>, B)
/*
expands to:
((2, (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>)))), ((2, (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>)))),
((2, (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>)))), ((2, (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>)))),
<a href="nil.html">BOOST_PP_NIL</a>))))
*/
</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>
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