projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | .. Algorithms/Transformation Algorithms//remove |60 |
| 2 | ||
| 3 | remove | |
| 4 | ====== | |
| 5 | ||
| 6 | Synopsis | |
| 7 | -------- | |
| 8 | ||
| 9 | .. parsed-literal:: | |
| 10 | ||
| 11 | template< | |
| 12 | typename Sequence | |
| 13 | , typename T | |
| 14 | , typename In = |unspecified| | |
| 15 | > | |
| 16 | struct remove | |
| 17 | { | |
| 18 | typedef |unspecified| type; | |
| 19 | }; | |
| 20 | ||
| 21 | ||
| 22 | Description | |
| 23 | ----------- | |
| 24 | ||
| 25 | Returns a new sequence that contains all elements from |begin/end<Sequence>| | |
| 26 | range except those that are identical to ``T``. | |
| 27 | ||
| 28 | .. Returns a copy of the original sequence with all elements identical to ``T`` | |
| 29 | removed. | |
| 30 | ||
| 31 | |transformation algorithm disclaimer| | |
| 32 | ||
| 33 | ||
| 34 | Header | |
| 35 | ------ | |
| 36 | ||
| 37 | .. parsed-literal:: | |
| 38 | ||
| 39 | #include <boost/mpl/remove.hpp> | |
| 40 | ||
| 41 | ||
| 42 | Model of | |
| 43 | -------- | |
| 44 | ||
| 45 | |Reversible Algorithm| | |
| 46 | ||
| 47 | ||
| 48 | Parameters | |
| 49 | ---------- | |
| 50 | ||
| 51 | +---------------+-----------------------------------+-------------------------------+ | |
| 52 | | Parameter | Requirement | Description | | |
| 53 | +===============+===================================+===============================+ | |
| 54 | | ``Sequence`` | |Forward Sequence| | An original sequence. | | |
| 55 | +---------------+-----------------------------------+-------------------------------+ | |
| 56 | | ``T`` | Any type | A type to be removed. | | |
| 57 | +---------------+-----------------------------------+-------------------------------+ | |
| 58 | | ``In`` | |Inserter| | An inserter. | | |
| 59 | +---------------+-----------------------------------+-------------------------------+ | |
| 60 | ||
| 61 | ||
| 62 | Expression semantics | |
| 63 | -------------------- | |
| 64 | ||
| 65 | |Semantics disclaimer...| |Reversible Algorithm|. | |
| 66 | ||
| 67 | For any |Forward Sequence| ``s``, an |Inserter| ``in``, and arbitrary type ``x``: | |
| 68 | ||
| 69 | ||
| 70 | .. parsed-literal:: | |
| 71 | ||
| 72 | typedef remove<s,x,in>::type r; | |
| 73 | ||
| 74 | :Return type: | |
| 75 | A type. | |
| 76 | ||
| 77 | :Semantics: | |
| 78 | Equivalent to | |
| 79 | ||
| 80 | .. parsed-literal:: | |
| 81 | ||
| 82 | typedef remove_if< s,is_same<_,x>,in >::type r; | |
| 83 | ||
| 84 | ||
| 85 | Complexity | |
| 86 | ---------- | |
| 87 | ||
| 88 | Linear. Performs exactly ``size<s>::value`` comparisons for equality, and at | |
| 89 | most ``size<s>::value`` insertions. | |
| 90 | ||
| 91 | ||
| 92 | Example | |
| 93 | ------- | |
| 94 | ||
| 95 | .. parsed-literal:: | |
| 96 | ||
| 97 | typedef vector<int,float,char,float,float,double>::type types; | |
| 98 | typedef remove< types,float >::type result; | |
| 99 | ||
| 100 | BOOST_MPL_ASSERT(( equal< result, vector<int,char,double> > )); | |
| 101 | ||
| 102 | ||
| 103 | See also | |
| 104 | -------- | |
| 105 | ||
| 106 | |Transformation Algorithms|, |Reversible Algorithm|, |reverse_remove|, |remove_if|, |copy|, |replace| | |
| 107 | ||
| 108 | ||
| 109 |