projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | .. Sequences/Intrinsic Metafunctions//sequence_tag |
| 2 | ||
| 3 | sequence_tag | |
| 4 | ============ | |
| 5 | ||
| 6 | Synopsis | |
| 7 | -------- | |
| 8 | ||
| 9 | .. parsed-literal:: | |
| 10 | ||
| 11 | template< | |
| 12 | typename X | |
| 13 | > | |
| 14 | struct sequence_tag | |
| 15 | { | |
| 16 | typedef |unspecified| type; | |
| 17 | }; | |
| 18 | ||
| 19 | ||
| 20 | ||
| 21 | Description | |
| 22 | ----------- | |
| 23 | ||
| 24 | ``sequence_tag`` is a |tag-metafunction| for all |tag dispatched| | |
| 25 | `intrinsic sequence operations`__. | |
| 26 | ||
| 27 | __ `Intrinsic Metafunctions`_ | |
| 28 | ||
| 29 | ||
| 30 | Header | |
| 31 | ------ | |
| 32 | ||
| 33 | .. parsed-literal:: | |
| 34 | ||
| 35 | #include <boost/mpl/sequence_tag.hpp> | |
| 36 | ||
| 37 | ||
| 38 | Parameters | |
| 39 | ---------- | |
| 40 | ||
| 41 | +---------------+-------------------+-----------------------------------------------+ | |
| 42 | | Parameter | Requirement | Description | | |
| 43 | +===============+===================+===============================================+ | |
| 44 | | ``X`` | Any type | A type to obtain a sequence tag for. | | |
| 45 | +---------------+-------------------+-----------------------------------------------+ | |
| 46 | ||
| 47 | ||
| 48 | Expression semantics | |
| 49 | -------------------- | |
| 50 | ||
| 51 | For any arbitrary type ``x``: | |
| 52 | ||
| 53 | ||
| 54 | .. parsed-literal:: | |
| 55 | ||
| 56 | typedef sequence_tag<x>::type tag; | |
| 57 | ||
| 58 | :Return type: | |
| 59 | A type. | |
| 60 | ||
| 61 | :Semantics: | |
| 62 | ``tag`` is an unspecified tag type for ``x``. | |
| 63 | ||
| 64 | ||
| 65 | Complexity | |
| 66 | ---------- | |
| 67 | ||
| 68 | Amortized constant time. | |
| 69 | ||
| 70 | ||
| 71 | See also | |
| 72 | -------- | |
| 73 | ||
| 74 | `Intrinsic Metafunctions`_, |Tag Dispatched Metafunction| | |
| 75 | ||
| 76 | ||
| 77 |