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Translation

:807
English
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
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Key English Chinese (Simplified Han script) Actions
```c++ size_type size() const noexcept; ```
```c++ size_type size() const noexcept; ```
Returns:;; `std::distance(begin(), end())`
Returns:;; `std::distance(begin(), end())`
:768
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max_size
max_size
```c++ size_type max_size() const noexcept; ```
```c++ size_type max_size() const noexcept; ```
Returns:;; `size()` of the largest possible container.
返回：可能的最大容器的 `size()`。
:779
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---
Modifiers
修改器
emplace
原地构造
```c++ template<class... Args> std::pair<iterator, bool> emplace(Args&&... args); ```
```c++ template<class... args=""> std::pair<iterator, bool=""> emplace(Args&amp;&amp;... args); ```</iterator,></class...>
:788
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才插入一个使用参数 `args` 构造的对象。
:791
Requires:;; `value_type` is constructible from `args`. 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. + + If `args...` is of the form `k,v`, it delays constructing the whole object until it is certain that an element should be inserted, using only the `k` argument to check. This optimization happens when `key_type` is move constructible or when the `k` argument is a `key_type`.
要求：`value_type` 可从 `args` 构造。
返回：返回类型的 `bool` 分量为 `true` 表示发生了插入。
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。

如果 `args...` 的形式为 `k,v`，则该函数会延迟构造整个对象，直到确定应该插入元素为止，仅使用 `k` 参数进行检查。当 `key_type` 可移动构造或 `k` 参数本身就是 `key_type` 类型时，此优化生效。
:800
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---
emplace_hint
emplace_hint
```c++ template<class... Args> iterator emplace_hint(const_iterator position, Args&&... args); ```
```c++ template<class... args=""> iterator emplace_hint(const_iterator position, Args&amp;&amp;... args); ```</class...>
:807
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才插入一个使用参数 `args` 构造的对象。
`position` is a suggestion to where the element should be inserted. This implementation ignores it.
`position` 是关于元素插入位置的建议。此实现会忽略该建议。
:812
Requires:;; `value_type` is constructible from `args`. 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. + + If `args...` is of the form `k,v`, it delays constructing the whole object until it is certain that an element should be inserted, using only the `k` argument to check. This optimization happens when `key_type` is move constructible or when the `k` argument is a `key_type`.
要求：`value_type` 可从 `args` 构造。
返回：返回类型的 `bool` 分量为 `true` 表示发生了插入。
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。

如果 `args...` 的形式为 `k,v`，则该函数会延迟构造整个对象，直到确定应该插入元素为止，仅使用 `k` 参数进行检查。当 `key_type` 可移动构造或 `k` 参数本身就是 `key_type` 类型时，此优化生效。
:821
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Copy Insert
复制插入
```c++ std::pair<iterator, bool> insert(const value_type& obj); std::pair<iterator, bool> insert(const init_type& obj); ```
```c++ std::pair<iterator, bool=""> insert(const value_type&amp; obj); std::pair<iterator, bool=""> insert(const init_type&amp; obj); ```</iterator,></iterator,>
:829
Inserts `obj` in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才将 `obj` 插入容器。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]. 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. + + A call of the form `insert(x)`, where `x` is equally convertible to both `const value_type&` and `const init_type&`, is not ambiguous and selects the `init_type` overload.
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可拷贝插入^]。
返回：返回类型的 `bool` 分量为 `true` 表示发生了插入。
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。

形式为 `insert(x)` 的调用，如果 `x` 可以同等转换为 `const value_type&amp;` 和 `const init_type&amp;`，则不会产生歧义，并且会选择 `init_type` 重载。
:841
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Move Insert
移动插入
```c++ std::pair<iterator, bool> insert(value_type&& obj); std::pair<iterator, bool> insert(init_type&& obj); ```
```c++ std::pair<iterator, bool=""> insert(value_type&amp;&amp; obj); std::pair<iterator, bool=""> insert(init_type&amp;&amp; obj); ```</iterator,></iterator,>
:849
Inserts `obj` in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才将 `obj` 插入容器。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. 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. + + A call of the form `insert(x)`, where `x` is equally convertible to both `value_type&&` and `init_type&&`, is not ambiguous and selects the `init_type` overload.
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入^]。
返回：返回类型的 `bool` 分量为 `true` 表示发生了插入。
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。

形式为 `insert(x)` 的调用，如果 `x` 可以同等转换为 `value_type&amp;&amp;` 和 `init_type&amp;&amp;`，则不会产生歧义，并且会选择 `init_type` 重载。
:861
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Copy Insert with Hint
带提示的复制插入
```c++ iterator insert(const_iterator hint, const value_type& obj); iterator insert(const_iterator hint, const init_type& obj); ``` Inserts `obj` in the container if and only if there is no element in the container with an equivalent key.
```c++
iterator insert(const_iterator hint, const value_type&amp; obj);
iterator insert(const_iterator hint, const init_type&amp; obj);
```
当且仅当容器中没有具有等价键的元素时，才将 `obj` 插入容器。
Key English Chinese (Simplified Han script) Actions
:654
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:669
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可拷贝插入^]。
:671
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---
:688
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:698
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]
要求：`value_type` 满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可拷贝插入^]。
:712
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:723
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:734
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:744
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:757
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:768
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:779
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:788
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才插入一个使用参数 `args` 构造的对象。
:791
Requires:;; `value_type` is constructible from `args`. 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. + + If `args...` is of the form `k,v`, it delays constructing the whole object until it is certain that an element should be inserted, using only the `k` argument to check. This optimization happens when `key_type` is move constructible or when the `k` argument is a `key_type`.
要求：`value_type` 可从 `args` 构造。
返回：返回类型的 `bool` 分量为 `true` 表示发生了插入。
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。

如果 `args...` 的形式为 `k,v`，则该函数会延迟构造整个对象，直到确定应该插入元素为止，仅使用 `k` 参数进行检查。当 `key_type` 可移动构造或 `k` 参数本身就是 `key_type` 类型时，此优化生效。
:800
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---
:807
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才插入一个使用参数 `args` 构造的对象。
:812
Requires:;; `value_type` is constructible from `args`. 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. + + If `args...` is of the form `k,v`, it delays constructing the whole object until it is certain that an element should be inserted, using only the `k` argument to check. This optimization happens when `key_type` is move constructible or when the `k` argument is a `key_type`.
要求：`value_type` 可从 `args` 构造。
返回：返回类型的 `bool` 分量为 `true` 表示发生了插入。
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。

如果 `args...` 的形式为 `k,v`，则该函数会延迟构造整个对象，直到确定应该插入元素为止，仅使用 `k` 参数进行检查。当 `key_type` 可移动构造或 `k` 参数本身就是 `key_type` 类型时，此优化生效。
:821
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---
:829
Inserts `obj` in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才将 `obj` 插入容器。
:841
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---
:849
Inserts `obj` in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才将 `obj` 插入容器。
:861
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---
:870
`hint` is a suggestion to where the element should be inserted. This implementation ignores it.
`hint` 是关于元素插入位置的建议。此实现会忽略该建议。
:882
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---
:890
Inserts `obj` in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中没有具有等价键的元素时，才将 `obj` 插入容器。
:892
`hint` is a suggestion to where the element should be inserted. This implementation ignores it.
`hint` 是关于元素插入位置的建议。此实现会忽略该建议。
:904
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:911
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。
:918
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:925
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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Translation uploaded
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.当且仅当容器中没有具有等价键的元素时，才插入一个使用参数 `args` 构造的对象。
:807
06/05/2026
User avatar admin

String added in the repository
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
Inserts an object, constructed with the arguments `args`, in the container if and only if there is no element in the container with an equivalent key.
:807
06/05/2026
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Glossary

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

String information

Key
:807
Flags
safe-html, strict-same
Unit identifier
52934
Source string location
:807
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_node_map_zh_Hans.adoc, string 181