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| <title>BOOST_PP_SEQ_TRANSFORM</title> |
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| The <b>BOOST_PP_SEQ_TRANSFORM</b> macro transforms each element in a <i>seq</i> |
| according to a supplied transformation. |
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| <h4> |
| Usage |
| </h4> |
| <div class="code"> |
| <b>BOOST_PP_SEQ_TRANSFORM</b>(<i>op</i>, <i>data</i>, <i>seq</i>) |
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| <h4> |
| Arguments |
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| <dl> |
| <dt>op</dt> |
| <dd> |
| A ternary predicate of the form <i>op</i>(<i>s</i>, <i>data</i>, <i>elem</i>). |
| This transformation is expanded by <b>BOOST_PP_SEQ_TRANSFORM</b> for each |
| element in <i>seq</i> with the next available <b>BOOST_PP_SEQ_FOLD_LEFT</b> fold |
| step, the auxiliary <i>data</i>, and the current element in <i>seq</i>. |
| </dd> |
| <dt>data</dt> |
| <dd> |
| Auxiliary data passed to <i>pred</i>. |
| </dd> |
| <dt>seq</dt> |
| <dd> |
| The <i>seq</i> to be transformed. |
| </dd> |
| </dl> |
| <h4> |
| Remarks |
| </h4> |
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| This macro expands <i>op</i> for each element in <i>seq</i>. It builds a |
| new <i>seq</i> out of the results of each call. If, for example, <i>seq</i> |
| is (<i>a</i>)(<i>b</i>)(<i>c</i>), this macro expands to... |
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| (<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>)) |
| </div> |
| </div> |
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| For maximum efficiency, use <b>BOOST_PP_SEQ_TRANSFORM_S</b>. |
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| <h4> |
| See Also |
| </h4> |
| <ul> |
| <li> |
| <a href="seq_transform_s.html">BOOST_PP_SEQ_TRANSFORM_S</a></li> |
| </ul> |
| <h4> |
| Requirements |
| </h4> |
| <div> |
| <b>Header:</b> <a href="../headers/seq/transform.html"><boost/preprocessor/seq/transform.hpp></a> |
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| <h4> |
| Sample Code |
| </h4> |
| <div> |
| <pre> |
| #include <<a href="../headers/arithmetic/dec.html">boost/preprocessor/arithmetic/dec.hpp</a>> |
| #include <<a href="../headers/seq/transform.html">boost/preprocessor/seq/transform.hpp</a>> |
| |
| #define SEQ (1)(3)(2)(5) |
| |
| #define OP(s, data, elem) <a href="dec.html">BOOST_PP_DEC</a>(elem) |
| |
| <a href="seq_transform.html">BOOST_PP_SEQ_TRANSFORM</a>(OP, 3, SEQ) |
| // expands to (0)(2)(1)(4) |
| </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> |
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