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Returns:;; An iterator pointing to the inserted element.
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:748
---
---
Copy Insert
拷贝插入
```c++ iterator insert(const value_type& obj); ```
```c++ iterator insert(const value_type& obj); ```
:755
Inserts `obj` in the container.
将 `obj` 插入容器中。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]. Returns:;; An iterator pointing to the inserted element. 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 factor to be greater to or equal to the maximum load factor. + + Pointers and references to elements are never invalidated.
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可拷贝插入^]。
返回：指向已插入元素的迭代器。
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因子大于或等于最大负载因子时才会发生。
指向元素的指针和引用永远不会失效。
:765
---
---
Move Insert
移动插入
```c++ iterator insert(value_type&& obj); ```
```c++ iterator insert(value_type&& obj); ```
:772
Inserts `obj` in the container.
将 `obj` 插入容器中。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. Returns:;; An iterator pointing to the inserted element. 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 factor to be greater to or equal to the maximum load factor. + + Pointers and references to elements are never invalidated.
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入^]。
返回：指向已插入元素的迭代器。
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因子大于或等于最大负载因子时才会发生。
指向元素的指针和引用永远不会失效。
:782
---
---
Emplace Insert
原地插入
```c++ template<class P> iterator insert(P&& obj); ```
```c++ template<class p=""> iterator insert(P&amp;&amp; obj); ```</class>
Inserts an element into the container by performing `emplace(std::forward<P>(value))`.
通过执行 `emplace(std::forward<p>(value))` 向容器中插入一个元素。</p>
:791
Only participates in overload resolution if `std::is_constructible<value_type, P&&>::value` is `true`.
仅在 `std::is_constructible<value_type, p&&="">::value` 为 `true` 时参与重载决议。</value_type,>
Returns:;; An iterator pointing to the inserted element.
返回：指向已插入元素的迭代器。
:796
---
---
Copy Insert with Hint
带提示的拷贝插入
```c++ iterator insert(const_iterator hint, const value_type& obj); ``` Inserts `obj` in the container.
```c++iterator insert(const_iterator hint, const value_type&amp; obj);```
将 `obj` 插入容器中。
:804
`hint` is a suggestion to where the element should be inserted.
`hint` 是关于元素插入位置的建议。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]. Returns:;; An iterator pointing to the inserted element. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; The standard is fairly vague on the meaning of the hint. But the only practical way to use it, and the only way that Boost.Unordered supports is to point to an existing element with the same key. + + Can invalidate iterators, but only if the insert causes the load factor to be greater to or equal to the maximum load factor. + + Pointers and references to elements are never invalidated.
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可拷贝插入^]。
返回：指向已插入元素的迭代器。
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：标准关于 `hint` 的含义表述相当模糊。但唯一实际的使用方式，也是 Boost.Unordered 支持的唯一方式，是将其指向一个具有相同键的已存在元素。
可能使迭代器失效，但仅当插入导致负载因子大于或等于最大负载因子时才会发生。
指向元素的指针和引用永远不会失效。
:816
---
---
Move Insert with Hint
带提示的移动插入
```c++ iterator insert(const_iterator hint, value_type&& obj); ```
```c++ iterator insert(const_iterator hint, value_type&amp;&amp; obj); ```
:823
Inserts `obj` in the container.
将 `obj` 插入容器中。
:825
`hint` is a suggestion to where the element should be inserted.
`hint` 是关于元素插入位置的建议。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. Returns:;; An iterator pointing to the inserted element. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; The standard is fairly vague on the meaning of the hint. But the only practical way to use it, and the only way that Boost.Unordered supports is to point to an existing element with the same key. + + Can invalidate iterators, but only if the insert causes the load factor to be greater to or equal to the maximum load factor. + + Pointers and references to elements are never invalidated.
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入^]。
返回：指向已插入元素的迭代器。
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：标准关于 `hint` 的含义表述相当模糊。但唯一实际的使用方式，也是 Boost.Unordered 支持的唯一方式，是将其指向一个具有相同键的已存在元素。
可能使迭代器失效，但仅当插入导致负载因子大于或等于最大负载因子时才会发生。
指向元素的指针和引用永远不会失效。
:837
---
---
Emplace Insert with Hint
带提示的原地插入
```c++ template<class P> iterator insert(const_iterator hint, P&& obj); ```
```c++ template<class p=""> iterator insert(const_iterator hint, P&amp;&amp; obj); ```</class>
Inserts an element into the container by performing `emplace_hint(hint, std::forward<P>(value))`.
通过执行 `emplace_hint(hint, std::forward<p>(value))` 向容器中插入一个元素。</p>
English Chinese (Simplified Han script) Actions
```c++ unordered_multimap(unordered_multimap&& other); ```
```c++ unordered_multimap(unordered_multimap&amp;&amp; other); ```
The move constructor.
移动构造函数。
Constructs an empty container, using allocator `a`.
使用分配器 `a` 构造一个空容器。
Postconditions:;; `size() == 0` Requires:;; `key_equal` needs to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].
后置条件：`size() == 0`
要求：`key_equal` 需要满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^]。
Copy Insert
拷贝插入
```c++ iterator insert(const value_type& obj); ```
```c++ iterator insert(const value_type&amp; obj); ```
Move Insert with Hint
带提示的移动插入
Emplace Insert with Hint
带提示的原地插入
```c++ template<class K, class T, class H, class P, class A, class Predicate> typename unordered_multimap<K, T, H, P, A>::size_type erase_if(unordered_multimap<K, T, H, P, A>& c, Predicate pred); ```
```c++ template<class k,="" class="" t,="" h,="" p,="" a,="" predicate=""> typename unordered_multimap<k, t,="" h,="" p,="" a="">::size_type erase_if(unordered_multimap<k, t,="" h,="" p,="" a="">&amp; c, Predicate pred); ```</k,></k,></class>
```c++ size_type bucket_size(size_type n) const; ```
```c++ size_type bucket_size(size_type n) const; ```
Move Insert
移动插入
```c++ iterator insert(value_type&& obj); ```
```c++ iterator insert(value_type&amp;&amp; obj); ```
Emplace Insert
原地插入
```c++ template<class P> iterator insert(P&& obj); ```
```c++ template<class p=""> iterator insert(P&amp;&amp; obj); ```</class>
Inserts an element into the container by performing `emplace(std::forward<P>(value))`.
通过执行 `emplace(std::forward<p>(value))` 向容器中插入一个元素。</p>
Returns:;; An iterator pointing to the inserted element.
返回：指向已插入元素的迭代器。
Copy Insert with Hint
带提示的拷贝插入
```c++ iterator insert(const_iterator hint, const value_type& obj); ``` Inserts `obj` in the container.
```c++iterator insert(const_iterator hint, const value_type&amp; obj);```
将 `obj` 插入容器中。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. Returns:;; An iterator pointing to the inserted element. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; The standard is fairly vague on the meaning of the hint. But the only practical way to use it, and the only way that Boost.Unordered supports is to point to an existing element with the same key. + + Can invalidate iterators, but only if the insert causes the load factor to be greater to or equal to the maximum load factor. + + Pointers and references to elements are never invalidated.
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入^]。
返回：指向已插入元素的迭代器。
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：标准关于 `hint` 的含义表述相当模糊。但唯一实际的使用方式，也是 Boost.Unordered 支持的唯一方式，是将其指向一个具有相同键的已存在元素。
可能使迭代器失效，但仅当插入导致负载因子大于或等于最大负载因子时才会发生。
指向元素的指针和引用永远不会失效。
Inserts an element into the container by performing `emplace_hint(hint, std::forward<P>(value))`.
通过执行 `emplace_hint(hint, std::forward<p>(value))` 向容器中插入一个元素。</p>
Insert Iterator Range
迭代器范围插入
Insert Initializer List
初始化列表插入
```c++ void insert(std::initializer_list<value_type> il); ```
```c++ void insert(std::initializer_list<value_type> il); ```</value_type>
```c++ node_type extract(const_iterator position); ```
```c++ node_type extract(const_iterator position); ```
Removes the element pointed to by `position`.
移除 `position` 所指向的元素。
```c++ node_type extract(const key_type& k); template<class K> node_type extract(K&& k); ```
```c++ node_type extract(const key_type&amp; k); template<class k=""> node_type extract(K&amp;&amp; k); ```</class>
Removes an element with key equivalent to `k`.
移除一个键与 `k` 等价的元素。
Insert with `node_handle`
通过 `node_handle` 插入
```c++ iterator insert(node_type&& nh); ```
```c++ iterator insert(node_type&amp;&amp; nh); ```
Insert with Hint and `node_handle`
带提示和 `node_handle` 的插入

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Translation uploaded
Returns:;; An iterator pointing to the inserted element.
Returns:;; An iterator pointing to the inserted element.返回：指向已插入元素的迭代器。
06/05/2026
User avatar admin

String added in the repository
Returns:;; An iterator pointing to the inserted element.
Returns:;; An iterator pointing to the inserted element.
06/05/2026
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Glossary

English Chinese (Simplified Han script)
No related strings found in the glossary.

String information

Flags
safe-html, strict-same
Unit identifier
51515
Source string location
:794
String age
06/05/2026
Last updated
06/06/2026
Source string age
06/05/2026
Translation file AsciiDoc file
doc/modules/ROOT/pages/reference/unordered_multimap_zh_Hans.adoc, string 197