1<html> 2 <head> 3 <title>BOOST_PP_SEQ_TRANSFORM</title> 4 <link rel="stylesheet" type="text/css" href="../styles.css"> 5 </head> 6 <body> 7 <div style="margin-left: 0px;"> 8 The <b>BOOST_PP_SEQ_TRANSFORM</b> macro transforms each element in a <i>seq</i> 9 according to a supplied transformation. 10 </div> 11 <h4> 12 Usage 13 </h4> 14 <div class="code"> 15 <b>BOOST_PP_SEQ_TRANSFORM</b>(<i>op</i>, <i>data</i>, <i>seq</i>) 16 </div> 17 <h4> 18 Arguments 19 </h4> 20 <dl> 21 <dt>op</dt> 22 <dd> 23 A ternary predicate of the form <i>op</i>(<i>s</i>, <i>data</i>, <i>elem</i>). 24 This transformation is expanded by <b>BOOST_PP_SEQ_TRANSFORM</b> for each 25 element in <i>seq</i> with the next available <b>BOOST_PP_SEQ_FOLD_LEFT</b> fold 26 step, the auxiliary <i>data</i>, and the current element in <i>seq</i>. 27 </dd> 28 <dt>data</dt> 29 <dd> 30 Auxiliary data passed to <i>pred</i>. 31 </dd> 32 <dt>seq</dt> 33 <dd> 34 The <i>seq</i> to be transformed. 35 </dd> 36 </dl> 37 <h4> 38 Remarks 39 </h4> 40 <div> 41 This macro expands <i>op</i> for each element in <i>seq</i>. It builds a 42 new <i>seq</i> out of the results of each call. If, for example, <i>seq</i> 43 is (<i>a</i>)(<i>b</i>)(<i>c</i>), this macro expands to... 44 <div> 45 (<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>, 46 <i>data</i>, <i>c</i>)) 47 </div> 48 </div> 49 <div> 50 For maximum efficiency, use <b>BOOST_PP_SEQ_TRANSFORM_S</b>. 51 </div> 52 <h4> 53 See Also 54 </h4> 55 <ul> 56 <li> 57 <a href="seq_transform_s.html">BOOST_PP_SEQ_TRANSFORM_S</a></li> 58 </ul> 59 <h4> 60 Requirements 61 </h4> 62 <div> 63 <b>Header:</b> <a href="../headers/seq/transform.html"><boost/preprocessor/seq/transform.hpp></a> 64 </div> 65 <h4> 66 Sample Code 67 </h4> 68 <div> 69 <pre> 70#include <<a href="../headers/arithmetic/dec.html">boost/preprocessor/arithmetic/dec.hpp</a>> 71#include <<a href="../headers/seq/transform.html">boost/preprocessor/seq/transform.hpp</a>> 72 73#define SEQ (1)(3)(2)(5) 74 75#define OP(s, data, elem) <a href="dec.html">BOOST_PP_DEC</a>(elem) 76 77<a href="seq_transform.html">BOOST_PP_SEQ_TRANSFORM</a>(OP, 3, SEQ) 78 // expands to (0)(2)(1)(4) 79</pre> 80 </div> 81 <hr size="1"> 82 <div style="margin-left: 0px;"> 83 <i>� Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> 84 </br><i>� Copyright Paul Mensonides 2002</i> 85 </div> 86 <div style="margin-left: 0px;"> 87 <p><small>Distributed under the Boost Software License, Version 1.0. (See 88 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or 89 copy at <a href= 90 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> 91 </div> 92 </body> 93</html> 94