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If `nh` is empty, `inserted` is `false`, `position` is `end()`, and `node` is empty.
If若 `nh` is empty,为空，则 `inserted` is为 `false`, ， `position` is为 `end()`, and ，且 `node` is empty.为空。
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Returns:;; An `insert_return_type` object constructed from `position`, `inserted` and `node`: +
Returns:;; An返回：一个 `insert_return_type` object constructed from对象，由 `position`, 、`inserted` and和 `node`: + 构造而成：
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If `nh` is not empty, inserts the associated element in the container if and only if there is no element in the container with a key equivalent to `nh.value()`. `nh` is empty when the function returns.
If如果 `nh` is not empty, inserts the associated element in the container if and only if there is no element in the container with a key equivalent to `nh.value()`. `nh` is empty when the function returns.非空，则当且仅当容器中没有键与 `nh.value()` 等价的元素时，才将关联的元素插入容器。函数返回时 `nh` 变为空。
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```c++ insert_return_type insert(node_type&& nh); ```
```c++ insert_return_type insert(node_type&&& nh); ```
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Insert Node
Insert Node节点插入
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---
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Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] into the container. Throws:;; When inserting a single element, if an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load.
Requires:;; 要求：`value_type` is可以在容器中进行 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] into the container. Throws:;; When inserting a single element, if an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load.可拷贝插入^]。
抛出：当插入单个元素时，如果除调用 `hasher` 之外的操作抛出异常，则该函数无效果。
注意：可能使迭代器失效，但仅当插入导致负载大于最大负载时才会发生。
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Inserts a range of elements into the container. Elements are inserted if and only if there is no element in the container with an equivalent key.
Inserts a range of elements into the container. Elements are inserted if and only if there is no element in the container with an equivalent key.将一个范围内的元素插入容器中。当且仅当容器中没有具有等价键的元素时，才会插入这些元素。
:902
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```c++ void insert(std::initializer_list<value_type>); ```
```c++ void insert(std::initializer_list<value_type>); ```</value_type>
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Insert Initializer List
Insert Initializer List初始化列表插入
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---
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:895
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Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] into the container from `*first`. Throws:;; When inserting a single element, if an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load.
Requires:;; 要求：`value_type` is可以从 `*first` 出发在容器中进行 https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] into the container from `*first`. Throws:;; When inserting a single element, if an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load.可原位构造^]。
抛出：当插入单个元素时，如果除调用 `hasher` 之外的操作抛出异常，则该函数无效果。
注意：可能使迭代器失效，但仅当插入导致负载大于最大负载时才会发生。
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Inserts a range of elements into the container. Elements are inserted if and only if there is no element in the container with an equivalent key.
Inserts a range of elements into the container. Elements are inserted if and only if there is no element in the container with an equivalent key.将一个范围内的元素插入容器中。当且仅当容器中没有具有等价键的元素时，才会插入这些元素。
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```c++ template<class InputIterator> void insert(InputIterator first, InputIterator last); ```
```c++ template<class IinputIiterator=""> void insert(InputIterator first, InputIterator last); ```</class>
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Insert Iterator Range
Insert Iterator Range迭代器范围插入
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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:;; The bool component of the return type is true if an insert took place. + + If an insert took place, then the iterator points to the newly inserted element. Otherwise, it points to the element with equivalent key. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load. + + This overload only participates in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs and neither `iterator` nor `const_iterator` are implicitly convertible from `K`. 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可以从 `k` 进行 https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] from `k`. Returns:;; The bool component of the return type is true if an insert took place. + + If an insert took place, then the iterator points to the newly inserted element. Otherwise, it points to the element with equivalent key. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load. + + This overload only participates in overload resolution if可原位构造^]。
返回：如果发生了插入，则返回类型的 bool 分量为 true。
如果发生了插入，则迭代器指向新插入的元素；否则，指向具有等价键的元素。
抛出：如果除调用 `hasher` 之外的操作抛出异常，则该函数无效果。
注意：可能使迭代器失效，但仅当插入导致负载大于最大负载时才会发生。

只有当 `Hash::is_transparent` and和 `Pred::is_transparent` are valid member typedefs and neither是有效的成员 typedef，且 `iterator` nor和 `const_iterator` are implicitly convertible from `K`. The library assumes that `Hash` is callable with both都不能从 `K` 隐式转换时，此重载才会参与重载决议。库假定 `Hash` 可同时用 `K` and和 `Key` and that `Pred` is transparent. This enables heterogeneous lookup which avoids the cost of instantiating an instance of the `Key` type.调用，并且 `Pred` 是透明的。这支持了异构查找，从而避免了实例化 `Key` 类型对象的开销。
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`hint` is a suggestion to where the element should be inserted. This implementation ignores it.
`hint` is a suggestion to where the element should be inserted. This implementation ignores it.是关于元素插入位置的建议。此实现会忽略该建议。
:869
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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.
Inserts an element constructed from当且仅当容器中没有具有等价键的元素时，才在容器中插入一个从 `std::forward<Kk>(k)` in the container if and only if there is no element in the container with an equivalent key.构造的元素。</k>
:867
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```c++ template<class K> std::pair<iterator, bool> insert(const_iterator hint, K&& k); ```
```c++ template<class Kk=""> std::pair<iterator, bool=""> insert(const_iterator hint, K&& k); ```amp;&amp; k); ```</iterator,></class>
06/05/2026

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