projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | .. Sequences/Concepts//Integral Sequence Wrapper |90 |
| 2 | ||
| 3 | Integral Sequence Wrapper | |
| 4 | ========================= | |
| 5 | ||
| 6 | Description | |
| 7 | ----------- | |
| 8 | ||
| 9 | An |Integral Sequence Wrapper| is a class template that provides a concise | |
| 10 | interface for creating a corresponding sequence of |Integral Constant|\ s. In | |
| 11 | particular, assuming that ``seq`` is a name of the wrapper's underlying | |
| 12 | sequence and |c1...cn| are integral constants of an integral type ``T`` to | |
| 13 | be stored in the sequence, the wrapper provides us with the following | |
| 14 | notation: | |
| 15 | ||
| 16 | .. line-block:: | |
| 17 | ||
| 18 | ``seq_c<T``,\ |c1...cn|\ ``>`` | |
| 19 | ||
| 20 | If ``seq`` is a |Variadic Sequence|, *numbered* wrapper forms are | |
| 21 | also avaialable: | |
| 22 | ||
| 23 | .. line-block:: | |
| 24 | ||
| 25 | ``seq``\ *n*\ ``_c<T``,\ |c1...cn|\ ``>`` | |
| 26 | ||
| 27 | ||
| 28 | ||
| 29 | Expression requirements | |
| 30 | ----------------------- | |
| 31 | ||
| 32 | |In the following table...| ``seq`` is a placeholder token for the | |
| 33 | |Integral Sequence Wrapper|'s underlying sequence's name. | |
| 34 | ||
| 35 | ||
| 36 | .. |seq_c| replace:: ``seq_c<T``,\ |c1...cn| | |
| 37 | .. |seqn_c| replace:: ``seq``\ *n*\ ``_c<T``,\ |c1...cn| | |
| 38 | ||
| 39 | ||
| 40 | +-------------------------------+-----------------------+---------------------------+ | |
| 41 | | Expression | Type | Complexity | | |
| 42 | +===============================+=======================+===========================+ | |
| 43 | | |seq_c|\ ``>`` | |Forward Sequence| | Amortized constant time. | | |
| 44 | +-------------------------------+-----------------------+---------------------------+ | |
| 45 | | |seq_c|\ ``>::type`` | |Forward Sequence| | Amortized constant time. | | |
| 46 | +-------------------------------+-----------------------+---------------------------+ | |
| 47 | | |seq_c|\ ``>::value_type`` | An integral type | Amortized constant time. | | |
| 48 | +-------------------------------+-----------------------+---------------------------+ | |
| 49 | | |seqn_c|\ ``>`` | |Forward Sequence| | Amortized constant time. | | |
| 50 | +-------------------------------+-----------------------+---------------------------+ | |
| 51 | | |seqn_c|\ ``>::type`` | |Forward Sequence| | Amortized constant time. | | |
| 52 | +-------------------------------+-----------------------+---------------------------+ | |
| 53 | | |seqn_c|\ ``>::value_type`` | An integral type | Amortized constant time. | | |
| 54 | +-------------------------------+-----------------------+---------------------------+ | |
| 55 | ||
| 56 | ||
| 57 | Expression semantics | |
| 58 | -------------------- | |
| 59 | ||
| 60 | ||
| 61 | .. parsed-literal:: | |
| 62 | ||
| 63 | typedef seq_c<T,\ |c1...cn|> s; | |
| 64 | typedef seq\ *n*\ _c<T,\ |c1...cn|> s; | |
| 65 | ||
| 66 | :Semantics: | |
| 67 | ``s`` is a sequence ``seq`` of integral constant wrappers ``integral_c<T,``\ |c1|\ ``>``, | |
| 68 | ``integral_c<T,``\ |c2|\ ``>``, ... ``integral_c<T,``\ |cn|\ ``>``. | |
| 69 | ||
| 70 | :Postcondition: | |
| 71 | ``size<s>::value == n``. | |
| 72 | ||
| 73 | .. .. parsed-literal:: | |
| 74 | ||
| 75 | BOOST_MPL_ASSERT_RELATION(( at_c<v,0>::type::value,==,\ |c1| )); | |
| 76 | BOOST_MPL_ASSERT_RELATION(( at_c<v,1>::type::value,==,\ |c2| )); | |
| 77 | ... | |
| 78 | BOOST_MPL_ASSERT_RELATION(( at_c<v,\ *n*>::type::value,==,\ |cn| )); | |
| 79 | ||
| 80 | ||
| 81 | .. .......................................................................... | |
| 82 | ||
| 83 | .. parsed-literal:: | |
| 84 | ||
| 85 | typedef seq_c<T,\ |c1...cn|>::type s; | |
| 86 | typedef seq\ *n*\ _c<T,\ |c1...cn|>::type s; | |
| 87 | ||
| 88 | :Semantics: | |
| 89 | ``s`` is identical to | |
| 90 | ``seq``\ *n*\ ``<``\ ``integral_c<T,``\ |c1|\ ``>``,\ ``integral_c<T,``\ |c2|\ ``>``, | |
| 91 | ... ``integral_c<T,``\ |cn|\ ``>`` ``>``. | |
| 92 | ||
| 93 | ||
| 94 | .. .......................................................................... | |
| 95 | ||
| 96 | .. parsed-literal:: | |
| 97 | ||
| 98 | typedef seq_c<T,\ |c1...cn|>::value_type t; | |
| 99 | typedef seq\ *n*\ _c<T,\ |c1...cn|>::value_type t; | |
| 100 | ||
| 101 | :Semantics: | |
| 102 | ``is_same<t,T>::value == true``. | |
| 103 | ||
| 104 | ||
| 105 | Models | |
| 106 | ------ | |
| 107 | ||
| 108 | * |vector_c| | |
| 109 | * |list_c| | |
| 110 | * |set_c| | |
| 111 | ||
| 112 | See also | |
| 113 | -------- | |
| 114 | ||
| 115 | |Sequences|, |Variadic Sequence|, |Integral Constant| | |
| 116 | ||
| 117 | ||
| 118 |