projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | .. Algorithms/Transformation Algorithms//copy |10 |
| 2 | ||
| 3 | copy | |
| 4 | ==== | |
| 5 | ||
| 6 | Synopsis | |
| 7 | -------- | |
| 8 | ||
| 9 | .. parsed-literal:: | |
| 10 | ||
| 11 | template< | |
| 12 | typename Sequence | |
| 13 | , typename In = |unspecified| | |
| 14 | > | |
| 15 | struct copy | |
| 16 | { | |
| 17 | typedef |unspecified| type; | |
| 18 | }; | |
| 19 | ||
| 20 | ||
| 21 | ||
| 22 | Description | |
| 23 | ----------- | |
| 24 | ||
| 25 | Returns a copy of the original sequence. | |
| 26 | ||
| 27 | |transformation algorithm disclaimer| | |
| 28 | ||
| 29 | ||
| 30 | Header | |
| 31 | ------ | |
| 32 | ||
| 33 | .. parsed-literal:: | |
| 34 | ||
| 35 | #include <boost/mpl/copy.hpp> | |
| 36 | ||
| 37 | ||
| 38 | Model of | |
| 39 | -------- | |
| 40 | ||
| 41 | |Reversible Algorithm| | |
| 42 | ||
| 43 | ||
| 44 | Parameters | |
| 45 | ---------- | |
| 46 | ||
| 47 | +---------------+---------------------------+-------------------------------+ | |
| 48 | | Parameter | Requirement | Description | | |
| 49 | +===============+===========================+===============================+ | |
| 50 | | ``Sequence`` | |Forward Sequence| | A sequence to copy. | | |
| 51 | +---------------+---------------------------+-------------------------------+ | |
| 52 | | ``In`` | |Inserter| | An inserter. | | |
| 53 | +---------------+---------------------------+-------------------------------+ | |
| 54 | ||
| 55 | ||
| 56 | Expression semantics | |
| 57 | -------------------- | |
| 58 | ||
| 59 | |Semantics disclaimer...| |Reversible Algorithm|. | |
| 60 | ||
| 61 | For any |Forward Sequence| ``s``, and an |Inserter| ``in``: | |
| 62 | ||
| 63 | .. parsed-literal:: | |
| 64 | ||
| 65 | typedef copy<s,in>::type r; | |
| 66 | ||
| 67 | :Return type: | |
| 68 | A type. | |
| 69 | ||
| 70 | :Semantics: | |
| 71 | Equivalent to | |
| 72 | ||
| 73 | .. parsed-literal:: | |
| 74 | ||
| 75 | typedef fold< s,in::state,in::operation >::type r; | |
| 76 | ||
| 77 | ||
| 78 | ||
| 79 | Complexity | |
| 80 | ---------- | |
| 81 | ||
| 82 | Linear. Exactly ``size<s>::value`` applications of ``in::operation``. | |
| 83 | ||
| 84 | ||
| 85 | Example | |
| 86 | ------- | |
| 87 | ||
| 88 | .. parsed-literal:: | |
| 89 | ||
| 90 | typedef vector_c<int,0,1,2,3,4,5,6,7,8,9> numbers; | |
| 91 | typedef copy< | |
| 92 | range_c<int,10,20> | |
| 93 | , back_inserter< numbers > | |
| 94 | >::type result; | |
| 95 | ||
| 96 | BOOST_MPL_ASSERT_RELATION( size<result>::value, ==, 20 ); | |
| 97 | BOOST_MPL_ASSERT(( equal< result,range_c<int,0,20> > )); | |
| 98 | ||
| 99 | ||
| 100 | See also | |
| 101 | -------- | |
| 102 | ||
| 103 | |Transformation Algorithms|, |Reversible Algorithm|, |reverse_copy|, |copy_if|, |transform| | |
| 104 | ||
| 105 | ||
| 106 |