70 lines
2.3 KiB
HTML
70 lines
2.3 KiB
HTML
<html>
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<head>
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<title>BOOST_PP_LIST_ENUM_R</title>
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<link rel="stylesheet" type="text/css" href="../styles.css">
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</head>
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<body>
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<div style="margin-left: 0px;">
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The <b>BOOST_PP_LIST_ENUM_R</b> macro converts a <i>list</i> to a comma-separated list.
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It reenters <b>BOOST_PP_FOR</b> with maximum efficiency.
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</div>
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<h4>Usage</h4>
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<div class="code">
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<b>BOOST_PP_LIST_ENUM_R</b>(<i>r</i>, <i>list</i>)
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</div>
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<h4>Arguments</h4>
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<dl>
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<dt>r</dt>
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<dd>
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The next available <b>BOOST_PP_FOR</b> repetition.
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</dd>
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<dt>list</dt>
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<dd>
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The <i>list</i> to be converted.
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</dd>
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</dl>
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<h4>Remarks</h4>
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<div>
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If <i>list</i> is, for example, (<i>a</i>, (<i>b</i>, (<i>c</i>, <b>BOOST_PP_NIL</b>))),
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this macro will produce:
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<div>
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<i>a</i>, <i>b</i>, <i>c</i>
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</div>
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</div>
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<h4>See Also</h4>
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<ul>
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<li><a href="list_enum.html">BOOST_PP_LIST_ENUM</a></li>
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</ul>
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<h4>Requirements</h4>
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<div>
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<b>Header:</b> <a href="../headers/list/enum.html"><boost/preprocessor/list/enum.hpp></a>
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</div>
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<h4>Sample Code</h4>
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<div><pre>
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#include <<a href="../headers/list/adt.html">boost/preprocessor/list/adt.hpp</a>>
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#include <<a href="../headers/repetition/for.html">boost/preprocessor/repetition/for.hpp</a>>
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#include <<a href="../headers/list/enum.html">boost/preprocessor/list/enum.hpp</a>>
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#define LIST (x, (y, (z, <a href="nil.html">BOOST_PP_NIL</a>)))
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#define PRED(r, state) <a href="list_is_cons.html">BOOST_PP_LIST_IS_CONS</a>(state)
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#define OP(r, state) <a href="list_rest.html">BOOST_PP_LIST_REST</a>(state)
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#define MACRO(r, state) [ <a href="list_enum_r.html">BOOST_PP_LIST_ENUM_R</a>(r, state) ]
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<a href="for.html">BOOST_PP_FOR</a>(LIST, PRED, OP, MACRO)
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// expands to [x, y, z] [y, z] [z]
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</pre></div>
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<hr size="1">
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<div style="margin-left: 0px;">
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<i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
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</br><i>© Copyright Paul Mensonides 2002</i>
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</div>
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<div style="margin-left: 0px;">
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<p><small>Distributed under the Boost Software License, Version 1.0. (See
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accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
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copy at <a href=
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"http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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</div>
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</body>
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</html>
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