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45 lines
1.1 KiB
Plaintext
45 lines
1.1 KiB
Plaintext
[/
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Copyright 2010 Neil Groves
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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/]
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[section:rotate rotate]
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[heading Prototype]
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``
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template<class ForwardRange>
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ForwardRange& rotate(ForwardRange& rng,
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typename range_iterator<ForwardRange>::type middle);
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template<class ForwardRange>
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const ForwardRange& rotate(const ForwardRange& rng,
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typename range_iterator<const ForwardRange>::type middle);
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``
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[heading Description]
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`rotate` rotates the elements in a range. It exchanges the two ranges `[begin(rng), middle)` and `[middle, end(rng))`. Returns a reference to `rng`.
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[heading Definition]
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Defined in the header file `boost/range/algorithm/rotate.hpp`
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[heading Requirements]
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* `ForwardRange` is a model of the __forward_range__ Concept.
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* `ForwardRange` is mutable.
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[heading Precondition:]
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* `[begin(rng), middle)` is a valid range.
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* `[middle, end(rng))` is a valid range.
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[heading Complexity]
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Linear. At most `distance(rng)` swaps are performed.
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[endsect]
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