100 lines
3.7 KiB
Markdown
100 lines
3.7 KiB
Markdown
[front.insert.iterator]
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# 24 Iterators library [[iterators]](./#iterators)
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## 24.5 Iterator adaptors [[predef.iterators]](predef.iterators#front.insert.iterator)
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### 24.5.2 Insert iterators [[insert.iterators]](insert.iterators#front.insert.iterator)
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#### 24.5.2.3 Class template front_insert_iterator [front.insert.iterator]
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#### [24.5.2.3.1](#front.insert.iter.general) General [[front.insert.iter.general]](front.insert.iter.general)
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[ð](#lib:front_insert_iterator)
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namespace std {template<class Container>class front_insert_iterator {protected: Container* container; 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 explicit front_insert_iterator(Container& x); constexpr front_insert_iterator& operator=(const typename Container::value_type& value); constexpr front_insert_iterator& operator=(typename Container::value_type&& value); constexpr front_insert_iterator& operator*(); constexpr front_insert_iterator& operator++(); constexpr front_insert_iterator operator++(int); };}
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#### [24.5.2.3.2](#front.insert.iter.ops) Operations [[front.insert.iter.ops]](front.insert.iter.ops)
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[ð](#lib:front_insert_iterator,constructor)
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`constexpr explicit front_insert_iterator(Container& x);
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`
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[1](#front.insert.iter.ops-1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L3976)
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*Effects*: Initializescontainer with addressof(x)[.](#front.insert.iter.ops-1.sentence-1)
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[ð](#lib:operator=,front_insert_iterator)
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`constexpr front_insert_iterator& operator=(const typename Container::value_type& value);
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`
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[2](#front.insert.iter.ops-2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L3989)
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*Effects*: As if by: container->push_front(value);
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[3](#front.insert.iter.ops-3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L3993)
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*Returns*: *this[.](#front.insert.iter.ops-3.sentence-1)
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[ð](#lib:operator=,front_insert_iterator_)
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`constexpr front_insert_iterator& operator=(typename Container::value_type&& value);
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`
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[4](#front.insert.iter.ops-4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L4004)
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*Effects*: As if by: container->push_front(std::move(value));
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[5](#front.insert.iter.ops-5)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L4008)
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*Returns*: *this[.](#front.insert.iter.ops-5.sentence-1)
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[ð](#lib:operator*,front_insert_iterator)
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`constexpr front_insert_iterator& operator*();
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`
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[6](#front.insert.iter.ops-6)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L4019)
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*Returns*: *this[.](#front.insert.iter.ops-6.sentence-1)
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[ð](#lib:operator++,front_insert_iterator)
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`constexpr front_insert_iterator& operator++();
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constexpr front_insert_iterator operator++(int);
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`
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[7](#front.insert.iter.ops-7)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L4031)
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*Returns*: *this[.](#front.insert.iter.ops-7.sentence-1)
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#### [24.5.2.3.3](#front.inserter) front_inserter [[front.inserter]](front.inserter)
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[ð](#lib:front_inserter)
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`template<class Container>
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constexpr front_insert_iterator<Container> front_inserter(Container& x);
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`
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[1](#front.inserter-1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iterators.tex#L4045)
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*Returns*: front_insert_iterator<Container>(x)[.](#front.inserter-1.sentence-1)
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