forked from boostorg/preprocessor
95 lines
3.3 KiB
HTML
95 lines
3.3 KiB
HTML
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
|
|
<link rel="stylesheet" type="text/css" href="../../../../boost.css">
|
|
<title>Boost.Preprocessor - Reference</title>
|
|
</head>
|
|
<body link="#0000ff" vlink="#800080">
|
|
<table border="0" cellpadding="7" cellspacing="0" width="100%" summary=
|
|
"header">
|
|
<tr>
|
|
<td valign="top" width="300">
|
|
<h3><a href="../../../../index.htm"><img height="86" width="277" alt="C++ Boost" src="../../../../c++boost.gif" border="0"></a></h3>
|
|
</td>
|
|
<td valign="top">
|
|
<h1 align="center">Boost.Preprocessor</h1>
|
|
<h2 align="center">Reference</h2>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<hr>
|
|
|
|
<a href="list_fold_left_2nd.htm">Prev</a> <a href="list_fold_right_2nd.htm">Next</a> <a href="index.htm#Macros">Macros</a> <a href="index.htm#Headers">Headers</a>
|
|
<hr>
|
|
|
|
<h2>#include <<a href="../../../../boost/preprocessor/list/fold_right.hpp">boost/preprocessor/list/fold_right.hpp</a>></h2>
|
|
|
|
<hr>
|
|
|
|
<h3><a name="BOOST_PP_LIST_FOLD_RIGHT">#define BOOST_PP_LIST_FOLD_RIGHT</a>(OP,LIST,STATE)</h3>
|
|
<p>Iterates <code>OP(D,X,STATE)</code> for each element <code>X</code> of the
|
|
list <code>LIST</code> (from the right or the end of the list).</p>
|
|
|
|
<p>In other words, expands to:</p>
|
|
|
|
<pre>
|
|
OP
|
|
( D
|
|
, <a href="list_at.htm#BOOST_PP_LIST_AT">BOOST_PP_LIST_AT</a>(LIST,0)
|
|
, ... OP
|
|
( D
|
|
, <a href="list_at.htm#BOOST_PP_LIST_AT">BOOST_PP_LIST_AT</a>(LIST,<a href="arithmetic_sub.htm#BOOST_PP_SUB">BOOST_PP_SUB</a>(<a href="list_size.htm#BOOST_PP_LIST_SIZE">BOOST_PP_LIST_SIZE</a>(LIST),2))
|
|
, OP
|
|
( D
|
|
, <a href="list_at.htm#BOOST_PP_LIST_AT">BOOST_PP_LIST_AT</a>(LIST,<a href="arithmetic_sub.htm#BOOST_PP_SUB">BOOST_PP_SUB</a>(<a href="list_size.htm#BOOST_PP_LIST_SIZE">BOOST_PP_LIST_SIZE</a>(LIST),1))
|
|
, STATE
|
|
)
|
|
) ...
|
|
)
|
|
</pre>
|
|
|
|
<p>For example,</p>
|
|
|
|
<pre>
|
|
#define TEST(D,X,STATE) <a href="cat.htm#BOOST_PP_CAT">BOOST_PP_CAT</a>(STATE,X)
|
|
<a href="list_fold_right.htm#BOOST_PP_LIST_FOLD_RIGHT">BOOST_PP_LIST_FOLD_RIGHT</a>(TEST,_,<a href="tuple_to_list.htm#BOOST_PP_TUPLE_TO_LIST">BOOST_PP_TUPLE_TO_LIST</a>(3,(A,B,C)))
|
|
</pre>
|
|
|
|
<p>expands to:</p>
|
|
|
|
<pre>
|
|
_CBA
|
|
</pre>
|
|
|
|
<h3>Uses</h3>
|
|
<ul>
|
|
<li><a href="while.htm#BOOST_PP_WHILE">BOOST_PP_WHILE</a>() (see for explanation of the D parameter)</li>
|
|
<li><a href="list_fold_left.htm#BOOST_PP_LIST_FOLD_LEFT">BOOST_PP_LIST_FOLD_LEFT</a>()</li>
|
|
</ul>
|
|
|
|
<h3>Test</h3>
|
|
<ul>
|
|
<li><a href="../../test/list_test.cpp">list_test.cpp</a></li>
|
|
</ul>
|
|
|
|
<hr>
|
|
|
|
<h3><a name="BOOST_PP_LIST_FOLD_RIGHT_D">#define BOOST_PP_LIST_FOLD_RIGHT_D</a>(D,OP,LIST,STATE)</h3>
|
|
<p>Can be used inside <a href="while.htm#BOOST_PP_WHILE">BOOST_PP_WHILE</a>().</p>
|
|
<hr>
|
|
|
|
<a href="list_fold_left_2nd.htm">Prev</a> <a href="list_fold_right_2nd.htm">Next</a> <a href="index.htm#Macros">Macros</a> <a href="index.htm#Headers">Headers</a>
|
|
<hr>
|
|
|
|
<p>Revised <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %b %Y" startspan --><!--webbot bot="Timestamp" endspan i-checksum="15246" --></p>
|
|
|
|
<p><i>© Copyright <a href="http://www.housemarque.com">Housemarque Oy</a> 2002</i></p>
|
|
|
|
<p>Permission to copy, use, modify, sell and distribute this document is granted
|
|
provided this copyright notice appears in all copies. This document is provided
|
|
"as is" without express or implied warranty, and with no claim as to its suitability
|
|
for any purpose.</p>
|
|
|
|
</body></html>
|