25 Iterators library [iterators]

25.5 Iterator adaptors [predef.iterators]

25.5.2 Insert iterators [insert.iterators]

25.5.2.4 Class template insert_iterator [insert.iterator]

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namespace std { template<class Container> class insert_iterator { protected: Container* container; ranges::iterator_t<Container> iter; public: using iterator_category = output_iterator_tag; using value_type = void; using difference_type = ptrdiff_t; using pointer = void; using reference = void; using container_type = Container; constexpr insert_iterator(Container& x, ranges::iterator_t<Container> i); constexpr insert_iterator& operator=(const typename Container::value_type& value); constexpr insert_iterator& operator=(typename Container::value_type&& value); constexpr insert_iterator& operator*(); constexpr insert_iterator& operator++(); constexpr insert_iterator& operator++(int); }; }

25.5.2.4.1 Operations [insert.iter.ops]

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constexpr insert_iterator(Container& x, ranges::iterator_t<Container> i);
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Effects: Initializes container with addressof(x) and iter with i.
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constexpr insert_iterator& operator=(const typename Container::value_type& value);
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Effects: As if by: iter = container->insert(iter, value); ++iter;
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Returns: *this.
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constexpr insert_iterator& operator=(typename Container::value_type&& value);
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Effects: As if by: iter = container->insert(iter, std::move(value)); ++iter;
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Returns: *this.
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constexpr insert_iterator& operator*();
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Returns: *this.
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constexpr insert_iterator& operator++(); constexpr insert_iterator& operator++(int);
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Returns: *this.

25.5.2.4.2 inserter [inserter]

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template<class Container> constexpr insert_iterator<Container> inserter(Container& x, ranges::iterator_t<Container> i);
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Returns: insert_iterator<Container>(x, i).