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47 lines
1.4 KiB
Plaintext
47 lines
1.4 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:copy_backward copy_backward]
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[heading Prototype]
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``
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template<class BidirectionalRange, class BidirectionalOutputIterator>
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BidirectionalOutputIterator
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copy_backward(const BidirectionalRange& source_rng,
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BidirectionalOutputIterator out_it);
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``
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[heading Description]
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`copy_backward` copies all elements from `source_rng` to the range `[out_it - distance(source_rng), out_it)`.
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The values are copied in reverse order. The return value is `out_it - distance(source_rng)`.
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Note well that unlike all other standard algorithms `out_it` denotes the *end* of the output sequence.
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[heading Definition]
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Defined in the header file `boost/range/algorithm/copy_backward.hpp`
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[heading Requirements]
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* `BidirectionalRange` is a model of __bidirectional_range__ Concept.
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* `OutputIterator` is a model of the `OutputIteratorConcept`.
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* The `value_type` of __bidirectional_range__ Concept is convertible to a type in `OutputIterator`'s set of value types.
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[heading Precondition:]
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* `out_it` is not an iterator within the `source_rng`.
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* `[out_it, out_it + distance(source_rng))` is a valid range.
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[heading Complexity]
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Linear. Exactly `distance(source_rng)` assignments are performed.
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[endsect]
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