26 Containers library [containers]

26.4 Associative containers [associative]

26.4.6 Class template set [set]

26.4.6.2 set constructors, copy, and assignment [set.cons]

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explicit set(const Compare& comp, const Allocator& = Allocator());
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Effects: Constructs an empty set using the specified comparison objects and allocator.
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Complexity: Constant.
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template <class InputIterator> set(InputIterator first, InputIterator last, const Compare& comp = Compare(), const Allocator& = Allocator());
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Effects: Constructs an empty set using the specified comparison object and allocator, and inserts elements from the range [first, last).
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Complexity: Linear in N if the range [first, last) is already sorted using comp and otherwise , where N is last - first.