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86 lines
2.4 KiB
Plaintext
86 lines
2.4 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:adjacent_find adjacent_find]
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[heading Prototype]
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``
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template<class ForwardRange>
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typename range_iterator<ForwardRange>::type
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adjacent_find(ForwardRange& rng);
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template<class ForwardRange>
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typename range_iterator<const ForwardRange>::type
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adjacent_find(const ForwardRange& rng);
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template<class ForwardRange, class BinaryPredicate>
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typename range_iterator<ForwardRange>::type
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adjacent_find(ForwardRange& rng, BinaryPred pred);
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template<class ForwardRange, class BinaryPredicate>
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typename range_iterator<const ForwardRange>::type
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adjacent_find(const ForwardRange& rng, BinaryPred pred);
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template<range_return_value_re, class ForwardRange>
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typename range_return<ForwardRange, re>::type
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adjacent_find(ForwardRange& rng);
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template<range_return_value_re, class ForwardRange>
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typename range_return<const ForwardRange, re>::type
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adjacent_find(const ForwardRange& rng);
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template<
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range_return_value re,
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class ForwardRange,
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class BinaryPredicate
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>
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typename range_return<ForwardRange, re>::type
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adjacent_find(ForwardRange& rng, BinaryPredicate pred);
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template<
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range_return_value re,
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class ForwardRange,
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class BinaryPredicate
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>
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typename range_return<const ForwardRange, re>::type
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adjacent_find(const ForwardRange& rng, BinaryPredicate pred);
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``
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[heading Description]
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[*Non-predicate versions:]
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`adjacent_find` finds the first adjacent elements `[x,y]` in `rng` where `x == y`
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[*Predicate versions:]
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`adjacent_find` finds the first adjacent elements `[x,y]` in `rng` where `pred(x,y)` is `true`.
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[heading Definition]
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Defined in the header file `boost/range/algorithm/adjacent_find.hpp`
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[heading Requirements]
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[*For the non-predicate versions of adjacent_find:]
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* `ForwardRange` is a model of the __forward_range__ Concept.
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* `ForwardRange`'s value type is a model of the `EqualityComparableConcept`.
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[*For the predicate versions of adjacent_find:]
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* `ForwardRange` is a model of the __forward_range__ Concept.
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* `BinaryPredicate` is a model of the `BinaryPredicateConcept`.
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* `ForwardRange`'s value type is convertible to `BinaryPredicate`'s first argument type and to `BinaryPredicate`'s second argument type.
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[heading Complexity]
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Linear. If `empty(rng)` then no comparisons are performed; otherwise, at most `distance(rng) - 1` comparisons.
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[endsect]
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