projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | .. Sequences/Views//joint_view |
| 2 | ||
| 3 | joint_view | |
| 4 | ========== | |
| 5 | ||
| 6 | Synopsis | |
| 7 | -------- | |
| 8 | ||
| 9 | .. parsed-literal:: | |
| 10 | ||
| 11 | template< | |
| 12 | typename Sequence1 | |
| 13 | , typename Sequence2 | |
| 14 | > | |
| 15 | struct joint_view | |
| 16 | { | |
| 17 | // |unspecified| | |
| 18 | // |...| | |
| 19 | }; | |
| 20 | ||
| 21 | ||
| 22 | ||
| 23 | Description | |
| 24 | ----------- | |
| 25 | ||
| 26 | A view into the sequence of elements formed by concatenating ``Sequence1`` | |
| 27 | and ``Sequence2`` elements. | |
| 28 | ||
| 29 | ||
| 30 | Header | |
| 31 | ------ | |
| 32 | ||
| 33 | .. parsed-literal:: | |
| 34 | ||
| 35 | #include <boost/mpl/joint_view.hpp> | |
| 36 | ||
| 37 | ||
| 38 | Model of | |
| 39 | -------- | |
| 40 | ||
| 41 | * |Forward Sequence| | |
| 42 | ||
| 43 | ||
| 44 | Parameters | |
| 45 | ---------- | |
| 46 | ||
| 47 | +-----------------------+---------------------------+-----------------------------------+ | |
| 48 | | Parameter | Requirement | Description | | |
| 49 | +=======================+===========================+===================================+ | |
| 50 | | ``Sequence1``, | |Forward Sequence| | Sequences to create a view on. | | |
| 51 | | ``Sequence2`` | | | | |
| 52 | +-----------------------+---------------------------+-----------------------------------+ | |
| 53 | ||
| 54 | Expression semantics | |
| 55 | -------------------- | |
| 56 | ||
| 57 | |Semantics disclaimer...| |Forward Sequence|. | |
| 58 | ||
| 59 | In the following table, ``v`` is an instance of ``joint_view``, ``s1`` and ``s2`` are arbitrary | |
| 60 | |Forward Sequence|\ s. | |
| 61 | ||
| 62 | +-------------------------------+-----------------------------------------------------------+ | |
| 63 | | Expression | Semantics | | |
| 64 | +===============================+===========================================================+ | |
| 65 | | .. parsed-literal:: | A lazy |Forward Sequence| of all the elements in the | | |
| 66 | | | ranges |begin/end<s1>|, |begin/end<s2>|. | | |
| 67 | | joint_view<s1,s2> | | | |
| 68 | | joint_view<s1,s2>::type | | | |
| 69 | +-------------------------------+-----------------------------------------------------------+ | |
| 70 | | ``size<v>::type`` | The size of ``v``; | | |
| 71 | | | ``size<v>::value == size<s1>::value + size<s2>::value``; | | |
| 72 | | | linear complexity; see |Forward Sequence|. | | |
| 73 | +-------------------------------+-----------------------------------------------------------+ | |
| 74 | ||
| 75 | Example | |
| 76 | ------- | |
| 77 | ||
| 78 | .. parsed-literal:: | |
| 79 | ||
| 80 | typedef joint_view< | |
| 81 | range_c<int,0,10> | |
| 82 | , range_c<int,10,15> | |
| 83 | > numbers; | |
| 84 | ||
| 85 | BOOST_MPL_ASSERT(( equal< numbers, range_c<int,0,15> > )); | |
| 86 | ||
| 87 | ||
| 88 | See also | |
| 89 | -------- | |
| 90 | ||
| 91 | |Sequences|, |Views|, |filter_view|, |transform_view|, |zip_view|, |iterator_range| | |
| 92 | ||
| 93 | ||
| 94 |