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Returns:;; The number of elements inserted.
Returns:;; The number of elements inserted.返回值：;; 成功插入的元素个数。
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Equivalent to [listing,subs="+macros,+quotes"]
Equivalent to等价于 [listing,subs="+macros,+quotes"]
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```c++ template<class InputIterator,class F> size_type insert_or_visit(InputIterator first, InputIterator last, F f); template<class InputIterator,class F> size_type insert_or_cvisit(InputIterator first, InputIterator last, F f); ```
```c++ template<class IinputIiterator,class F="" f=""> size_type insert_or_visit(InputIterator first, InputIterator last, F f); template<class IinputIiterator,class F="" f=""> size_type insert_or_cvisit(InputIterator first, InputIterator last, F f); ```</class></class>
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Insert Iterator Range or Visit
Insert Iterator Range or Visit迭代器范围插入或访问
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---
---
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Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] from `k`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; These overloads only participate in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. The library assumes that `Hash` is callable with both `K` and `Key` and that `Pred` is transparent. This enables heterogeneous lookup which avoids the cost of instantiating an instance of the `Key` type.
Requires:要求：;; `value_type` is https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] from `k`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; These overloads only participate in overload resolution if可从 `k` 原位构造。
返回值：;; 若成功插入元素则返回 `true`。
并发特性：;; 会阻塞当前对象 `*this` 的扩容重哈希操作。
注意：;; 仅当 `Hash::is_transparent` and和 `Pred::is_transparent` are valid member typedefs. The library assumes that `Hash` is callable with both为合法成员别名时，该重载版本参与重载决议。库假定 `Hash` 可同时接收 `K` and与 `Key` and that `Pred` is transparent. This enables heterogeneous lookup which avoids the cost of instantiating an instance of the `Key` type.类型调用，且 `Pred` 是透明的。这支持异构查找，避免了实例化 `Key` 类型对象的开销。
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Inserts an element constructed from `std::forward<K>(k)` in the container if and only if there is no element in the container with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.
Inserts an element constructed from当且仅当容器中不存在键等价的元素时，使用 `std::forward<Kk>(k)` in the container if and only if there is no element in the container with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.构造元素并插入容器；否则，以该等价元素的常量引用为参数调用函数 `f`。</k>
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```c++ template<class K, class F> bool insert_or_visit(K&& k, F f); template<class K, class F> bool insert_or_cvisit(K&& k, F f); ```
```c++ template<class K,k,="" class F="" f=""> bool insert_or_visit(K&&amp;&amp; k, F f); template<class K,k,="" class F="" f=""> bool insert_or_cvisit(K&&amp;&amp; k, F f); ```</class></class>
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Transparent insert_or_[c]visit
Transparent insert_or_[c]透明 insert++_++or++_[++c++]++visit
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Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`.
Requires:要求：;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`.支持移动插入。
返回值：;; 若成功插入元素则返回 `true`。
并发特性：;; 会阻塞当前对象 `*this` 的扩容重哈希操作。
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Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.
Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.当且仅当哈希表中不存在键等价的元素时，将 `obj` 插入表中；否则，以该等价元素的常量引用为参数调用函数 `f`。
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```c++ template<class F> bool insert_or_visit(value_type&& obj, F f); template<class F> bool insert_or_cvisit(value_type&& obj, F f); ```
```c++ template<class Ff=""> bool insert_or_visit(value_type&&amp;&amp; obj, F f); template<class Ff=""> bool insert_or_cvisit(value_type&&amp;&amp; obj, F f); ```</class></class>
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Move insert_or_[c]visit
Move移动 insert_or_[c]++_++or++_[++c++]++visit
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---
---
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Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]. Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`.
Requires:要求：;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]. Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`.支持拷贝插入。
返回值：;; 若成功插入元素则返回 `true`。
并发特性：;; 会阻塞当前对象 `*this` 的扩容重哈希操作。
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Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.
Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.当且仅当哈希表中不存在键等价的元素时，将 `obj` 插入表中；否则，以该等价元素的常量引用为参数调用函数 `f`。
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```c++ template<class F> bool insert_or_visit(const value_type& obj, F f); template<class F> bool insert_or_cvisit(const value_type& obj, F f); ```
```c++ template<class Ff=""> bool insert_or_visit(const value_type&amp; obj, F f); template<class Ff=""> bool insert_or_cvisit(const value_type&amp; obj, F f); ```</class></class>
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Copy insert_or_[c]visit
Copy复制 insert_or_[c]++_++or++_[++c++]++visit
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---
---
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