| [section:rotate rotate] |
| |
| [heading Prototype] |
| |
| `` |
| template<class ForwardRange> |
| ForwardRange& rotate(ForwardRange& rng, |
| typename range_iterator<ForwardRange>::type middle); |
| |
| template<class ForwardRange> |
| const ForwardRange& rotate(const ForwardRange& rng, |
| typename range_iterator<const ForwardRange>::type middle); |
| `` |
| |
| [heading Description] |
| |
| `rotate` rotates the elements in a range. It exchanges the two ranges `[begin(rng), middle)` and `[middle, end(rng))`. Returns a reference to `rng`. |
| |
| [heading Definition] |
| |
| Defined in the header file `boost/range/algorithm/rotate.hpp` |
| |
| [heading Requirements] |
| |
| * `ForwardRange` is a model of the __forward_range__ Concept. |
| * `ForwardRange` is mutable. |
| |
| [heading Precondition:] |
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| * `[begin(rng), middle)` is a valid range. |
| * `[middle, end(rng))` is a valid range. |
| |
| [heading Complexity] |
| |
| Linear. At most `distance(rng)` swaps are performed. |
| |
| [endsect] |
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| |
