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  3. <title>BOOST_PP_SLOT</title>
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  7. <div style="margin-left: 0px;">
  8. The <b>BOOST_PP_SLOT</b> macro retrieves a value previously evaluated by <b>BOOST_PP_ASSIGN_SLOT</b>.
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  10. <h4>Usage</h4>
  11. <div class="code">
  12. <b>BOOST_PP_SLOT</b>(<i>i</i>)
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  14. <h4>Arguments</h4>
  15. <dl>
  16. <dt>i</dt>
  17. <dd>
  18. The <i>slot</i> index to be retrieved.&nbsp;
  19. This value must be in the range of <i>1</i> to <b>BOOST_PP_LIMIT_SLOT_COUNT</b>.
  20. </dd>
  21. </dl>
  22. <h4>Remarks</h4>
  23. <div>
  24. Prior to use, the <i>slot</i> at index <i>i</i> must have been assigned with <b>BOOST_PP_ASSIGN_SLOT</b>.
  25. </div>
  26. <h4>See Also</h4>
  27. <ul>
  28. <li><a href="assign_slot.html">BOOST_PP_ASSIGN_SLOT</a></li>
  29. <li><a href="limit_slot_count.html">BOOST_PP_LIMIT_SLOT_COUNT</a></li>
  30. </ul>
  31. <h4>Requirements</h4>
  32. <div>
  33. <b>Header:</b> &nbsp;<a href="../headers/slot/slot.html">&lt;boost/preprocessor/slot/slot.hpp&gt;</a>
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  35. <h4>Sample Code</h4>
  36. <div><pre>
  37. #include &lt;<a href="../headers/slot/slot.html">boost/preprocessor/slot/slot.hpp</a>&gt;
  38. #define X() 4
  39. #define <a href="value.html">BOOST_PP_VALUE</a> 1 + 2 + 3 + X()
  40. #include <a href="assign_slot.html">BOOST_PP_ASSIGN_SLOT</a>(1)
  41. #undef X
  42. <a href="slot.html">BOOST_PP_SLOT</a>(1) // expands to 10
  43. </pre></div>
  44. <hr size="1">
  45. <div style="margin-left: 0px;">
  46. <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  47. </br><i>© Copyright Paul Mensonides 2002</i>
  48. </div>
  49. <div style="margin-left: 0px;">
  50. <p><small>Distributed under the Boost Software License, Version 1.0. (See
  51. accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  52. copy at <a href=
  53. "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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