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- <html>
- <head>
- <title>BOOST_PP_SEQ_TRANSFORM</title>
- <link rel="stylesheet" type="text/css" href="../styles.css">
- </head>
- <body>
- <div style="margin-left: 0px;">
- The <b>BOOST_PP_SEQ_TRANSFORM</b> macro transforms each element in a <i>seq</i>
- according to a supplied transformation.
- </div>
- <h4>
- Usage
- </h4>
- <div class="code">
- <b>BOOST_PP_SEQ_TRANSFORM</b>(<i>op</i>, <i>data</i>, <i>seq</i>)
- </div>
- <h4>
- Arguments
- </h4>
- <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>
- <div>
- 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...
- <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>))
- </div>
- </div>
- <div>
- For maximum efficiency, use <b>BOOST_PP_SEQ_TRANSFORM_S</b>.
- </div>
- <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>
- </div>
- <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>
- </body>
- </html>
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