From Jason Turner

[insert.iterator]

C++17 → C++20 2.8 KB 83 lines
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Archived: C++17 | C++20
Markdown: C++17 | C++20
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  1. tmp/tmptucwwzmr/{from.md → to.md} +68 -12
tmp/tmptucwwzmr/{from.md → to.md} RENAMED
@@ -3,30 +3,86 @@
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  ``` cpp
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  namespace std {
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  template<class Container>
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  class insert_iterator {
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  protected:
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- Container* container;
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- typename Container::iterator iter;
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  public:
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  using iterator_category = output_iterator_tag;
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  using value_type = void;
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- using difference_type = void;
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  using pointer = void;
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  using reference = void;
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  using container_type = Container;
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- insert_iterator(Container& x, typename Container::iterator i);
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- insert_iterator& operator=(const typename Container::value_type& value);
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- insert_iterator& operator=(typename Container::value_type&& value);
 
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- insert_iterator& operator*();
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- insert_iterator& operator++();
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- insert_iterator& operator++(int);
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  };
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-
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- template <class Container>
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- insert_iterator<Container> inserter(Container& x, typename Container::iterator i);
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  }
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  ```
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  ``` cpp
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  namespace std {
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  template<class Container>
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  class insert_iterator {
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  protected:
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+ Container* container = nullptr;
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+ ranges::iterator_t<Container> iter = ranges::iterator_t<Container>();
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  public:
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  using iterator_category = output_iterator_tag;
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  using value_type = void;
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+ using difference_type = ptrdiff_t;
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  using pointer = void;
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  using reference = void;
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  using container_type = Container;
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+ insert_iterator() = default;
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+ constexpr insert_iterator(Container& x, ranges::iterator_t<Container> i);
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+ constexpr insert_iterator& operator=(const typename Container::value_type& value);
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+ constexpr insert_iterator& operator=(typename Container::value_type&& value);
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+ constexpr insert_iterator& operator*();
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+ constexpr insert_iterator& operator++();
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+ constexpr insert_iterator& operator++(int);
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  };
 
 
 
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  }
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  ```
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+ ##### Operations <a id="insert.iter.ops">[[insert.iter.ops]]</a>
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+
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+ ``` cpp
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+ constexpr insert_iterator(Container& x, ranges::iterator_t<Container> i);
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+ ```
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+
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+ *Effects:* Initializes `container` with `addressof(x)` and `iter` with
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+ `i`.
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+
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+ ``` cpp
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+ constexpr insert_iterator& operator=(const typename Container::value_type& value);
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+ ```
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+
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+ *Effects:* As if by:
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+
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+ ``` cpp
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+ iter = container->insert(iter, value);
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+ ++iter;
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+ ```
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+
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+ *Returns:* `*this`.
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+
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+ ``` cpp
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+ constexpr insert_iterator& operator=(typename Container::value_type&& value);
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+ ```
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+
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+ *Effects:* As if by:
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+
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+ ``` cpp
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+ iter = container->insert(iter, std::move(value));
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+ ++iter;
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+ ```
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+
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+ *Returns:* `*this`.
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+
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+ ``` cpp
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+ constexpr insert_iterator& operator*();
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+ ```
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+
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+ *Returns:* `*this`.
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+
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+ ``` cpp
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+ constexpr insert_iterator& operator++();
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+ constexpr insert_iterator& operator++(int);
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+ ```
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+
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+ *Returns:* `*this`.
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+
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+ ##### `inserter` <a id="inserter">[[inserter]]</a>
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+
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+ ``` cpp
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+ template<class Container>
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+ constexpr insert_iterator<Container>
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+ inserter(Container& x, ranges::iterator_t<Container> i);
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+ ```
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+
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+ *Returns:* `insert_iterator<Container>(x, i)`.
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+