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| <title>BOOST_PP_SEQ_FOR_EACH</title> |
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| The <b>BOOST_PP_SEQ_FOR_EACH</b> macro repeats a macro for each element in a <i>seq</i>. |
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| Usage |
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| <b>BOOST_PP_SEQ_FOR_EACH</b>(<i>macro</i>, <i>data</i>, <i>seq</i>) |
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| Arguments |
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| <dt>macro</dt> |
| <dd> |
| A ternary macro of the form <i>macro</i>(<i>r</i>, <i>data</i>, <i>elem</i>). |
| This macro is expanded by <b>BOOST_PP_SEQ_FOR_EACH</b> with each element in <i>seq</i>. |
| It is expanded with the next available <b>BOOST_PP_FOR</b> repetition, the |
| auxiliary <i>data</i>, and the current element. |
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| <dt>data</dt> |
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| Auxiliary data passed to <i>macro</i>. |
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| <dt>seq</dt> |
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| The <i>seq</i> for which <i>macro</i> will be invoked on each element. |
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| Remarks |
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| This macro is a repetition construct. If <i>seq</i> is (<i>a</i>)(<i>b</i>)(<i>c</i>), |
| it expands to the sequence: |
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| <i>macro</i>(<i>r</i>, <i>data</i>, <i>a</i>) <i>macro</i>(<i>r</i>, <i>data</i>, |
| <i>b</i>) <i>macro</i>(<i>r</i>, <i>data</i>, <i>c</i>) |
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| For maximum efficiency, use <b>BOOST_PP_SEQ_FOR_EACH_R</b>. |
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| See Also |
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| <ul> |
| <li> |
| <a href="seq_for_each_r.html">BOOST_PP_SEQ_FOR_EACH_R</a></li> |
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| Requirements |
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| <b>Header:</b> <a href="../headers/seq/for_each.html"><boost/preprocessor/seq/for_each.hpp></a> |
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| Sample Code |
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| <pre> |
| #include <<a href="../headers/cat.html">boost/preprocessor/cat.hpp</a>> |
| #include <<a href="../headers/seq/for_each.html">boost/preprocessor/seq/for_each.hpp</a>> |
| |
| #define SEQ (w)(x)(y)(z) |
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| #define MACRO(r, data, elem) <a href="cat.html">BOOST_PP_CAT</a>(elem, data) |
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| <a href="seq_for_each.html">BOOST_PP_SEQ_FOR_EACH</a>(MACRO, _, SEQ) // expands to w_ x_ y_ z_ |
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| <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> |
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| <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> |
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