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| <title>BOOST_PP_SEQ_FOR_EACH_PRODUCT</title> |
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| The <b>BOOST_PP_SEQ_FOR_EACH_PRODUCT</b> macro repeats a macro for each |
| cartesian product of several <i>seqs</i>. |
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| <h4> |
| Usage |
| </h4> |
| <div class="code"> |
| <b>BOOST_PP_SEQ_FOR_EACH_PRODUCT</b>(<i>macro</i>, <i>seqs</i>) |
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| <h4> |
| Arguments |
| </h4> |
| <dl> |
| <dt>macro</dt> |
| <dd> |
| The binary macro of the form <i>macro</i>(<i>r</i>, <i>product</i>). This |
| macro is expanded by <b>BOOST_PP_FOR_EACH_PRODUCT</b> with each cartesian |
| product in <i>seqs</i>. It is expanded with the next available <b>BOOST_PP_FOR</b> |
| repetition and a <i>seq</i> containing a cartesian product. |
| </dd> |
| <dt>seqs</dt> |
| <dd> |
| A <i>seq</i> of <i>seqs</i> from which cartesian products are obtained. |
| </dd> |
| </dl> |
| <h4> |
| Remarks |
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| This macro is a repetition construct. If two <i>seqs</i> are (<i>a</i>)(<i>b</i>)(<i>c</i>) |
| and (<i>x</i>)(<i>y</i>)(<i>z</i>), this macro will produce the following |
| sequence: |
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| <i>macro</i>(<i>r</i>, (<i>a</i>)(<i>x</i>)) <i>macro</i>(<i>r</i>, (<i>a</i>)(<i>y</i>)) |
| <i>macro</i>(<i>r</i>, (<i>a</i>)(<i>z</i>)) \ |
| <br> |
| <i>macro</i>(<i>r</i>, (<i>b</i>)(<i>x</i>)) <i>macro</i>(<i>r</i>, (<i>b</i>)(<i>y</i>)) |
| <i>macro</i>(<i>r</i>, (<i>b</i>)(<i>z</i>)) \ |
| <br> |
| <i>macro</i>(<i>r</i>, (<i>c</i>)(<i>x</i>)) <i>macro</i>(<i>r</i>, (<i>c</i>)(<i>y</i>)) |
| <i>macro</i>(<i>r</i>, (<i>c</i>)(<i>z</i>)) |
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| </div> |
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| For maximum efficiency, use <b>BOOST_PP_SEQ_FOR_EACH_PRODUCT_R</b>. |
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| <h4> |
| See Also |
| </h4> |
| <ul> |
| <li> |
| <a href="seq_for_each_product_r.html">BOOST_PP_SEQ_FOR_EACH_PRODUCT_R</a></li> |
| </ul> |
| <h4> |
| Requirements |
| </h4> |
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| <b>Header:</b> <a href="../headers/seq/for_each_product.html"><boost/preprocessor/seq/for_each_product.hpp></a> |
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| <h4> |
| Sample Code |
| </h4> |
| <div> |
| <pre> |
| #include <<a href="../headers/seq/for_each_product.html">boost/preprocessor/seq/for_each_product.hpp</a>> |
| #include <<a href="../headers/seq/to_tuple.html">boost/preprocessor/seq/to_tuple.hpp</a>> |
| |
| #define S1 (a)(b)(c) |
| #define S2 (x)(y)(z) |
| #define S3 (p)(q) |
| |
| #define MACRO(r, product) <a href="seq_to_tuple.html">BOOST_PP_SEQ_TO_TUPLE</a>(product) |
| |
| <a href="seq_for_each_product.html">BOOST_PP_SEQ_FOR_EACH_PRODUCT</a>(MACRO, (S1)(S2)(S3)) |
| // expands to: |
| // (a, x, p) (a, x, q) (a, y, p) (a, y, q) (a, z, p) (a, z, q) |
| // (b, x, p) (b, x, q) (b, y, p) (b, y, q) (b, z, p) (b, z, q) |
| // (c, x, p) (c, x, q) (c, y, p) (c, y, q) (c, z, p) (c, z, q) |
| </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> |
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