Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Unordered Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Throws:;; Only throws an exception if it is thrown by …

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Key :1277

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Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. + + In this implementation, this overload doesn't call either function object's methods so it is no throw, but this might not be true in other implementations. Notes:;; This method was implemented because returning an iterator to the next element from erase was expensive, but the container has been redesigned so that is no longer the case. So this method is now deprecated.

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Key	English	Chinese (Simplified Han script)
	Returns:;; The iterator following `position` before the erasure. Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. Notes:;; In older versions this could be inefficient because it had to search through several buckets to find the position of the returned iterator. The data structure has been changed so that this is no longer the case, and the alternative erase methods have been deprecated.	返回：`position` 在被擦除之前的后一个迭代器。抛出：仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出。注意：在旧版本中，此操作可能效率较低，因为它需要搜索多个桶以找到返回迭代器的位置。数据结构已经更改，不再是这种情况，并且备用的擦除方法已被弃用。
:1236	---	---
	Erase by Key	通过键擦除
	```c++ size_type erase(const key_type& k); template<class K> size_type erase(K&& k); ```	```c++ size_type erase(const key_type& k); template<class k=""> size_type erase(K&& k); ```</class>
	Erase all elements with key equivalent to `k`.	擦除所有键与 `k` 等价的元素。
	Returns:;; The number of elements erased. Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. Notes:;; The `template<class K>` 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.	返回：被擦除的元素数量。抛出：仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出。注意：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef，且 `iterator` 和 `const_iterator` 都不能从 `K` 隐式转换时参与重载决议。库假定 `Hash` 可同时使用 `K` 和 `Key` 调用，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。</class>
:1251	---	---
	Erase Range	范围擦除
	```c++ iterator erase(const_iterator first, const_iterator last); ```	```c++ iterator erase(const_iterator first, const_iterator last); ```
	Erases the elements in the range from `first` to `last`.	擦除从 `first` 到 `last` 范围内的元素。
	Returns:;; The iterator following the erased elements - i.e. `last`. Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. + + In this implementation, this overload doesn't call either function object's methods so it is no throw, but this might not be true in other implementations.	返回：被擦除元素之后的迭代器——即 `last`。抛出：仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出。在此实现中，此重载不会调用任何函数对象的方法，因此不会抛出异常，但这在其他实现中可能并不成立。
:1267	---	---
	quick_erase	quick_erase
	```c++ void quick_erase(const_iterator position); ```	```c++ void quick_erase(const_iterator position); ```
:1274	Erase the element pointed to by `position`.	擦除 `position` 所指向的元素。
:1277	Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. + + In this implementation, this overload doesn't call either function object's methods so it is no throw, but this might not be true in other implementations. Notes:;; This method was implemented because returning an iterator to the next element from erase was expensive, but the container has been redesigned so that is no longer the case. So this method is now deprecated.	抛出：;; 仅当由 `hasher` 或 `key_equal` 抛出异常时才会抛出异常。在此实现中，此重载不会调用任一函数对象的方法，因此不会抛出异常，但在其他实现中可能并非如此。备注：;; 之所以实现此方法，是因为从 `erase` 返回下一个元素的迭代器开销较大，但容器已经过重新设计，情况不再如此。因此，此方法现已废弃。
:1282	---	---
	erase_return_void	erase_return_void
	```c++ void erase_return_void(const_iterator position); ```	```c++ void erase_return_void(const_iterator position); ```
:1289	Erase the element pointed to by `position`.	删除 `position` 所指向的元素。
:1292	Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. + + In this implementation, this overload doesn't call either function object's methods so it is no throw, but this might not be true in other implementations. Notes:;; This method was implemented because returning an iterator to the next element from erase was expensive, but the container has been redesigned so that is no longer the case. So this method is now deprecated.	抛出：;; 仅当由 `hasher` 或 `key_equal` 抛出异常时才会抛出异常。在此实现中，此重载不会调用任一函数对象的方法，因此不会抛出异常，但在其他实现中可能并非如此。备注：;; 之所以实现此方法，是因为从 `erase` 返回下一个元素的迭代器开销较大，但容器已经过重新设计，情况不再如此。因此，此方法现已废弃。
:1297	---	---
	swap	交换
	```c++ void swap(unordered_map& other) noexcept(boost::allocator_traits<Allocator>::is_always_equal::value && boost::is_nothrow_swappable_v<Hash> && boost::is_nothrow_swappable_v<Pred>); ```	```c++ void swap(unordered_map& other) noexcept(boost::allocator_traits<allocator>::is_always_equal::value && boost::is_nothrow_swappable_v<hash> && boost::is_nothrow_swappable_v<pred>); ```</pred></hash></allocator>
	Swaps the contents of the container with the parameter.	将容器的内容与参数进行交换。
:1309	If `Allocator::propagate_on_container_swap` is declared and `Allocator::propagate_on_container_swap::value` is `true` then the containers' allocators are swapped. Otherwise, swapping with unequal allocators results in undefined behavior.	如果 `Allocator::propagate_on_container_swap` 已声明且 `Allocator::propagate_on_container_swap::value` 为 `true`，则交换两个容器的分配器。否则，使用不相等的分配器进行交换将导致未定义行为。
	Throws:;; Doesn't throw an exception unless it is thrown by the copy constructor or copy assignment operator of `key_equal` or `hasher`. Notes:;; The exception specifications aren't quite the same as the C++11 standard, as the equality predicate and hash function are swapped using their copy constructors.	抛出：;; 除非由 `key_equal` 或 `hasher` 的复制构造函数或复制赋值运算符抛出异常，否则不会抛出异常。备注：;; 异常规范与 C++11 标准不完全相同，因为相等谓词和哈希函数是通过它们的复制构造函数进行交换的。
:1315	---	---
	clear	清空
	```c++ void clear(); ```	```c++ void clear(); ```
	Erases all elements in the container.	清除容器中的所有元素。

Key	English	Chinese (Simplified Han script)
:1134	---	---
:1147	---	---
:1164	---	---
:1171	If `nh` is empty, has no effect.	如果 `nh` 为空，则无效果。
:1173	Otherwise inserts the element owned by `nh` if and only if there is no element in the container with an equivalent key.	否则，当且仅当容器中没有具有等价键的元素时，才插入 `nh` 所拥有的元素。
:1189	---	---
:1196	If `nh` is empty, has no effect.	如果 `nh` 为空，则无效果。
:1198	Otherwise inserts the element owned by `nh` if and only if there is no element in the container with an equivalent key.	否则，当且仅当容器中没有具有等价键的元素时，才插入 `nh` 所拥有的元素。
:1202	`hint` is a suggestion to where the element should be inserted.	`hint` 是关于元素插入位置的建议。
:1220	---	---
:1229	Erase the element pointed to by `position`.	擦除 `position` 所指向的元素。
:1236	---	---
:1251	---	---
:1267	---	---
:1274	Erase the element pointed to by `position`.	擦除 `position` 所指向的元素。
:1277	Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. + + In this implementation, this overload doesn't call either function object's methods so it is no throw, but this might not be true in other implementations. Notes:;; This method was implemented because returning an iterator to the next element from erase was expensive, but the container has been redesigned so that is no longer the case. So this method is now deprecated.	抛出：;; 仅当由 `hasher` 或 `key_equal` 抛出异常时才会抛出异常。在此实现中，此重载不会调用任一函数对象的方法，因此不会抛出异常，但在其他实现中可能并非如此。备注：;; 之所以实现此方法，是因为从 `erase` 返回下一个元素的迭代器开销较大，但容器已经过重新设计，情况不再如此。因此，此方法现已废弃。
:1282	---	---
:1289	Erase the element pointed to by `position`.	删除 `position` 所指向的元素。
:1292	Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. + + In this implementation, this overload doesn't call either function object's methods so it is no throw, but this might not be true in other implementations. Notes:;; This method was implemented because returning an iterator to the next element from erase was expensive, but the container has been redesigned so that is no longer the case. So this method is now deprecated.	抛出：;; 仅当由 `hasher` 或 `key_equal` 抛出异常时才会抛出异常。在此实现中，此重载不会调用任一函数对象的方法，因此不会抛出异常，但在其他实现中可能并非如此。备注：;; 之所以实现此方法，是因为从 `erase` 返回下一个元素的迭代器开销较大，但容器已经过重新设计，情况不再如此。因此，此方法现已废弃。
:1297	---	---
:1309	If `Allocator::propagate_on_container_swap` is declared and `Allocator::propagate_on_container_swap::value` is `true` then the containers' allocators are swapped. Otherwise, swapping with unequal allocators results in undefined behavior.	如果 `Allocator::propagate_on_container_swap` 已声明且 `Allocator::propagate_on_container_swap::value` 为 `true`，则交换两个容器的分配器。否则，使用不相等的分配器进行交换将导致未定义行为。
:1315	---	---
:1328	---	---
:1363	---	---
:1372	---	---
:1382	---	---
:1392	---	---
:1419	---	---
:1432	---	---
:1445	---	---

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Chinese (Simplified Han script) 418 characters editedCurrent translationState: Translated

~~Throws:;; Only throws an exception if it is thrown by~~抛出：;; 仅当由 `hasher` or或 `key_equal`. + + In this implementation, this overload doesn't call either function object's methods so it is no throw, but this might not be true in other implementations. Notes:;; This method was implemented because returning an iterator to the next element from erase was expensive, but the container has been redesigned so that is no longer the case. So this method is now deprecated. 抛出异常时才会抛出异常。

在此实现中，此重载不会调用任一函数对象的方法，因此不会抛出异常，但在其他实现中可能并非如此。

备注：;; 之所以实现此方法，是因为从 `erase` 返回下一个元素的迭代器开销较大，但容器已经过重新设计，情况不再如此。因此，此方法现已废弃。

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06/05/2026

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Chinese (Simplified Han script) 454 characters editedPrevious translationState: Needs editing (Needs rewriting)

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