projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | <html> |
| 2 | <head> | |
| 3 | <title>BOOST_PP_ENUM_PARAMS_Z</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_ENUM_PARAMS_Z</b> macro generates a comma-separated list of parameters. | |
| 9 | It reenters <b>BOOST_PP_REPEAT</b> with maximum efficiency. | |
| 10 | </div> | |
| 11 | <h4>Usage</h4> | |
| 12 | <div class="code"> | |
| 13 | <b>BOOST_PP_ENUM_PARAMS_Z</b>(<i>z</i>, <i>count</i>, <i>param</i>) | |
| 14 | </div> | |
| 15 | <h4>Arguments</h4> | |
| 16 | <dl> | |
| 17 | <dt>z</dt> | |
| 18 | <dd> | |
| 19 | The next available <b>BOOST_PP_REPEAT</b> dimension. | |
| 20 | </dd> | |
| 21 | <dt>count</dt> | |
| 22 | <dd> | |
| 23 | The number of parameters to generate. | |
| 24 | Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_REPEAT</b>. | |
| 25 | </dd> | |
| 26 | <dt>param</dt> | |
| 27 | <dd> | |
| 28 | The text of the parameter. | |
| 29 | <b>BOOST_PP_ENUM_PARAMS_Z</b> concatenates numbers ranging from <i>0</i> to <i>count</i> - <i>1</i> | |
| 30 | to generate parameters. | |
| 31 | </dd> | |
| 32 | </dl> | |
| 33 | <h4>Remarks</h4> | |
| 34 | <div> | |
| 35 | This macro expands to the comma-separated sequence: | |
| 36 | <div> | |
| 37 | <i>param</i> ## <i>0</i>, <i>param</i> ## <i>1</i>, ... <i>param</i> ## <i>count</i> - <i>1</i> | |
| 38 | </div> | |
| 39 | </div> | |
| 40 | <h4>See Also</h4> | |
| 41 | <ul> | |
| 42 | <li><a href="enum_params.html">BOOST_PP_ENUM_PARAMS</a></li> | |
| 43 | <li><a href="limit_repeat.html">BOOST_PP_LIMIT_REPEAT</a></li> | |
| 44 | </ul> | |
| 45 | <h4>Requirements</h4> | |
| 46 | <div> | |
| 47 | <b>Header:</b> <a href="../headers/repetition/enum_params.html"><boost/preprocessor/repetition/enum_params.hpp></a> | |
| 48 | </div> | |
| 49 | <h4>Sample Code</h4> | |
| 50 | <div id="sample"><pre> | |
| 51 | #include <<a href="../headers/arithmetic/inc.html">boost/preprocessor/arithmetic/inc.hpp</a>> | |
| 52 | #include <<a href="../headers/repetition/enum_params.html">boost/preprocessor/repetition/enum_params.hpp</a>> | |
| 53 | #include <<a href="../headers/repetition/repeat.html">boost/preprocessor/repetition/repeat.hpp</a>> | |
| 54 | ||
| 55 | #define MACRO(z, n, _) \ | |
| 56 | template< \ | |
| 57 | <a href="enum_params_z.html">BOOST_PP_ENUM_PARAMS_Z</a>(z, <a href="inc.html">BOOST_PP_INC</a>(n), class T) \ | |
| 58 | > class X ## n { \ | |
| 59 | /* ... */ \ | |
| 60 | }; \ | |
| 61 | /**/ | |
| 62 | ||
| 63 | <a href="repeat.html">BOOST_PP_REPEAT</a>(2, MACRO, nil) | |
| 64 | /* | |
| 65 | expands to... | |
| 66 | template<class T0> class X0 { }; | |
| 67 | template<class T0, class T1> class X1 { }; | |
| 68 | */ | |
| 69 | </pre></div> | |
| 70 | <hr size="1"> | |
| 71 | <div style="margin-left: 0px;"> | |
| 72 |