seq_for_each_i_r.html 2.3 KB

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  1. <html>
  2. <head>
  3. <title>BOOST_PP_SEQ_FOR_EACH_I_R</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_FOR_EACH_I_R</b> macro repeats a macro for each element in
  9. a <i>seq</i>.&nbsp; It reenters <b>BOOST_PP_FOR</b> with maximum efficiency.
  10. </div>
  11. <h4>
  12. Usage
  13. </h4>
  14. <div class="code">
  15. <b>BOOST_PP_SEQ_FOR_EACH_I_R</b>(<i>r</i>, <i>macro</i>, <i>data</i>, <i>seq</i>)
  16. </div>
  17. <h4>
  18. Arguments
  19. </h4>
  20. <dl>
  21. <dt>r</dt>
  22. <dd>
  23. The next available <b>BOOST_PP_FOR</b> repetition.
  24. </dd>
  25. <dt>macro</dt>
  26. <dd>
  27. A macro of the form <i>macro</i>(<i>r</i>, <i>data</i>, <i>i</i>, <i>elem</i>).&nbsp;
  28. This macro is expanded by <b>BOOST_PP_SEQ_FOR_EACH_I</b> with each element in <i>seq</i>.&nbsp;
  29. It is expanded with the next available <b>BOOST_PP_FOR</b> repetition, the
  30. auxiliary <i>data</i>, the index of the current element, and the current
  31. element.
  32. </dd>
  33. <dt>data</dt>
  34. <dd>
  35. Auxiliary data passed to <i>macro</i>.
  36. </dd>
  37. <dt>seq</dt>
  38. <dd>
  39. The <i>seq</i> for which <i>macro</i> will be invoked on each element.
  40. </dd>
  41. </dl>
  42. <h4>
  43. Remarks
  44. </h4>
  45. <div>
  46. This macro is a repetition construct.&nbsp; If <i>seq</i> is (<i>a</i>)(<i>b</i>)(<i>c</i>),
  47. it expands to the sequence:
  48. <div>
  49. <i>macro</i>(<i>r</i>, <i>data</i>, <i>0</i>, <i>a</i>) <i>macro</i>(<i>r</i>, <i>data</i>,
  50. <i>1</i>, <i>b</i>) <i>macro</i>(<i>r</i>, <i>data</i>, <i>2</i>, <i>c</i>)
  51. </div>
  52. </div>
  53. <h4>
  54. See Also
  55. </h4>
  56. <ul>
  57. <li>
  58. <a href="seq_for_each_i.html">BOOST_PP_SEQ_FOR_EACH_I</a></li>
  59. </ul>
  60. <h4>
  61. Requirements
  62. </h4>
  63. <div>
  64. <b>Header:</b> &nbsp;<a href="../headers/seq/for_each_i.html">&lt;boost/preprocessor/seq/for_each_i.hpp&gt;</a>
  65. </div>
  66. <hr size="1">
  67. <div style="margin-left: 0px;">
  68. <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  69. </br><i>© Copyright Paul Mensonides 2002</i>
  70. </div>
  71. <div style="margin-left: 0px;">
  72. <p><small>Distributed under the Boost Software License, Version 1.0. (See
  73. accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  74. copy at <a href=
  75. "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
  76. </div>
  77. </body>
  78. </html>