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- <title>BOOST_PP_SEQ_FOR_EACH_I</title>
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- The <b>BOOST_PP_SEQ_FOR_EACH_I</b> macro repeats a macro for each element in a <i>seq</i>.
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- <h4>
- Usage
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- <div class="code">
- <b>BOOST_PP_SEQ_FOR_EACH_I</b>(<i>macro</i>, <i>data</i>, <i>seq</i>)
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- <h4>
- Arguments
- </h4>
- <dl>
- <dt>macro</dt>
- <dd>
- A macro of the form <i>macro</i>(<i>r</i>, <i>data</i>, <i>i</i>, <i>elem</i>).
- This macro is expanded by <b>BOOST_PP_SEQ_FOR_EACH_I</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>, the index of the current element, and the current
- element.
- </dd>
- <dt>data</dt>
- <dd>
- Auxiliary data passed to <i>macro</i>.
- </dd>
- <dt>seq</dt>
- <dd>
- The <i>seq</i> for which <i>macro</i> will be invoked on each element.
- </dd>
- </dl>
- <h4>
- Remarks
- </h4>
- <div>
- 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>0</i>, <i>a</i>) <i>macro</i>(<i>r</i>, <i>data</i>,
- <i>1</i>, <i>b</i>) <i>macro</i>(<i>r</i>, <i>data</i>, <i>2</i>, <i>c</i>)
- </div>
- </div>
- <div>
- For maximum efficiency, use <b>BOOST_PP_SEQ_FOR_EACH_I_R</a></li>
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- <h4>
- See Also
- </h4>
- <ul>
- <li>
- <a href="seq_for_each_i_r.html">BOOST_PP_SEQ_FOR_EACH_I_R</a></li>
- </ul>
- <h4>
- Requirements
- </h4>
- <div>
- <b>Header:</b> <a href="../headers/seq/for_each_i.html"><boost/preprocessor/seq/for_each_i.hpp></a>
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- <h4>
- Sample Code
- </h4>
- <div>
- <pre>
- #include <<a href="../headers/cat.html">boost/preprocessor/cat.hpp</a>>
- #include <<a href="../headers/seq/for_each_i.html">boost/preprocessor/seq/for_each_i.hpp</a>>
- #define SEQ (a)(b)(c)(d)
- #define MACRO(r, data, i, elem) <a href="cat.html">BOOST_PP_CAT</a>(elem, <a href="cat.html">BOOST_PP_CAT</a>(data, i))
- <a href="seq_for_each_i.html">BOOST_PP_SEQ_FOR_EACH_I</a>(MACRO, _, SEQ) // expands to a_0 b_1 c_2 d_3
- </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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