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82 lines
3.0 KiB
Plaintext
82 lines
3.0 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:set_difference set_difference]
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[heading Prototype]
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``
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template<
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class SinglePassRange1,
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class SinglePassRange2,
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class OutputIterator
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>
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OutputIterator set_difference(const SinglePassRange1& rng1,
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const SinglePassRange2& rng2,
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OutputIterator out);
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template<
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class SinglePassRange1,
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class SinglePassRange2,
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class OutputIterator,
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class BinaryPredicate
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>
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OutputIterator set_difference(const SinglePassRange1& rng1,
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const SinglePassRange2& rng2,
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OutputIterator out,
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BinaryPredicate pred);
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``
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[heading Description]
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`set_difference` constructs a sorted range that is the set difference of the sorted ranges `rng1` and `rng2`. The return value is the end of the output range.
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The ordering relationship is determined by using `operator<` in the non-predicate versions, and by evaluating `pred` in the predicate versions.
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[heading Definition]
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Defined in the header file `boost/range/algorithm/set_algorithm.hpp`
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[heading Requirements]
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[*For the non-predicate versions:]
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* `SinglePassRange1` is a model of the __single_pass_range__ Concept.
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* `SinglePassRange2` is a model of the __single_pass_range__ Concept.
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* `OutputIterator` is a model of the `OutputIteratorConcept`.
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* `SinglePassRange1` and `SinglePassRange2` have the same value type.
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* `SinglePassRange1`'s value type is a model of the `LessThanComparableConcept`.
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* `SinglePassRange2`'s value type is a model of the `LessThanComparableConcept`.
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* The ordering of objects of type `SinglePassRange1`'s value type is a [*/strict weak ordering/], as defined in the `LessThanComparableConcept` requirements.
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* The ordering of objects of type `SinglePassRange2`'s value type is a [*/strict weak ordering/], as defined in the `LessThanComparableConcept` requirements.
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[*For the predicate versions:]
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* `SinglePassRange1` is a model of the __single_pass_range__ Concept.
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* `SinglePassRange2` is a model of the __single_pass_range__ Concept.
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* `OutputIterator` is a model of the `OutputIteratorConcept`.
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* `SinglePassRange1` and `SinglePassRange2` have the same value type.
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* `BinaryPredicate` is a model of the `StrictWeakOrderingConcept`.
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* `SinglePassRange1`'s value type is convertible to `BinaryPredicate`'s first argument type.
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* `SinglePassRange2`'s value type is convertible to `BinaryPredicate`'s second argument types.
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[heading Precondition:]
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[*For the non-predicate versions:]
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`rng1` and `rng2` are sorted in ascending order according to `operator<`.
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[*For the predicate versions:]
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`rng1` and `rng2` are sorted in ascending order according to `pred`.
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[heading Complexity]
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Linear. `O(N)`, where `N` is `distance(rng1) + distance(rng2)`.
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[endsect]
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