Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Unordered Multiset (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Iterators to non-transferred elements in `source` remain valid.

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Key	English	Chinese (Simplified Han script)
	clear	清空
	```c++ void clear() noexcept; ```	```c++ void clear() noexcept; ```
	Erases all elements in the container.	擦除容器中的所有元素。
	Postconditions:;; `size() == 0` Throws:;; Never throws an exception.	后置条件：`size() == 0` 抛出：永不抛出异常。
:1035	---	---
	merge	合并
	```c++ template<class H2, class P2> void merge(unordered_multiset<Key, H2, P2, Allocator>& source); template<class H2, class P2> void merge(unordered_multiset<Key, H2, P2, Allocator>&& source); template<class H2, class P2> void merge(unordered_set<Key, H2, P2, Allocator>& source); template<class H2, class P2> void merge(unordered_set<Key, H2, P2, Allocator>&& source); ```	```c++ template<class h2,="" class="" p2=""> void merge(unordered_multiset<key, h2,="" p2,="" allocator="">& source); template<class h2,="" class="" p2=""> void merge(unordered_multiset<key, h2,="" p2,="" allocator="">&& source); template<class h2,="" class="" p2=""> void merge(unordered_set<key, h2,="" p2,="" allocator="">& source); template<class h2,="" class="" p2=""> void merge(unordered_set<key, h2,="" p2,="" allocator="">&& source); ```</key,></class></key,></class></key,></class></key,></class>
	Attempt to "merge" two containers by iterating `source` and extracting all nodes in `source` and inserting them into `*this`.	尝试“合并”两个容器：遍历 `source`，提取 `source` 中的所有节点，并将它们插入到 `*this` 中。
	Because `source` can have a different hash function and key equality predicate, the key of each node in `source` is rehashed using `this\->hash_function()` and then, if required, compared using `this\->key_eq()`.	由于 `source` 可能具有不同的哈希函数和键相等谓词，因此 `source` 中每个节点的键都会使用 `this->hash_function()` 重新计算哈希值，然后在必要时使用 `this->key_eq()` 进行比较。
	The behavior of this function is undefined if `this\->get_allocator() != source.get_allocator()`.	如果 `this->get_allocator() != source.get_allocator()`，则此函数的行为未定义。
	This function does not copy or move any elements and instead simply relocates the nodes from `source` into `*this`.	此函数不会拷贝或移动任何元素，而是仅仅将节点从 `source` 重新定位到 `*this` 中。
	Notes:;; + --	注意:;; + --
	Pointers and references to transferred elements remain valid.	指向被转移元素的指针和引用保持有效。
	Invalidates iterators to transferred elements.	使指向被转移元素的迭代器失效。
	Invalidates iterators belonging to `*this`.	使属于 `*this` 的迭代器失效。
	Iterators to non-transferred elements in `source` remain valid.	指向 `source` 中未被转移元素的迭代器保持有效。
	--	--
:1069	---	---
	Observers	观察器
	get_allocator	get_allocator
	``` allocator_type get_allocator() const noexcept; ```	``` allocator_type get_allocator() const noexcept; ```
:1078	---	---
	hash_function	哈希函数
	``` hasher hash_function() const; ```	``` hasher hash_function() const; ```
	Returns:;; The container's hash function.	返回：容器的哈希函数对象。
:1088	---	---
	key_eq	key_eq
	``` key_equal key_eq() const; ```	``` key_equal key_eq() const; ```
	Returns:;; The container's key equality predicate	返回：容器的键相等谓词。
:1099	---	---
	Lookup	查找

	English	Chinese (Simplified Han script)	Actions
	```c++ node_type extract(const_iterator position); ```	```c++ node_type extract(const_iterator position); ```
	Returns:;; A `node_type` owning the element. Notes:;; A node extracted using this method can be inserted into a compatible `unordered_set`.	返回：一个拥有该元素的 `node_type`。注意：通过此方法提取的节点可以插入到兼容的 `unordered_set` 中。
	Returns:;; A `node_type` owning the element if found, otherwise an empty `node_type`. Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. Notes:;; A node extracted using this method can be inserted into a compatible `unordered_set`. + + 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：如果找到该元素，则返回一个拥有该元素的 `node_type`；否则返回一个空的 `node_type`。抛出：仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出。注意：通过此方法提取的节点可以插入到兼容的 `unordered_set` 中。 `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>
	```c++ iterator insert(node_type&& nh); ```	```c++ iterator insert(node_type&& nh); ```
	Requires:;; `nh` is empty or `nh.get_allocator()` is equal to the container's allocator. Returns:;; If `nh` was empty, returns `end()`. + + Otherwise returns an iterator pointing to the newly 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. + + This can be used to insert a node extracted from a compatible `unordered_set`.	要求：`nh` 为空，或者 `nh.get_allocator()` 等于容器的分配器。返回：如果 `nh` 为空，则返回 `end()`。否则，返回指向新插入元素的迭代器。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。此函数可用于插入从兼容的 `unordered_set` 中提取的节点。
	Requires:;; `nh` is empty or `nh.get_allocator()` is equal to the container's allocator. Returns:;; If `nh` was empty, returns `end()`. + + Otherwise returns an iterator pointing to the newly 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. + + This can be used to insert a node extracted from a compatible `unordered_set`.	要求：`nh` 为空，或者 `nh.get_allocator()` 等于容器的分配器。返回：如果 `nh` 为空，则返回 `end()`。否则，返回指向新插入元素的迭代器。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。此函数可用于插入从兼容的 `unordered_set` 中提取的节点。
	Erase by Position	通过位置擦除
	```c++ iterator erase(iterator position); iterator erase(const_iterator position); ```	```c++ iterator erase(iterator position); iterator erase(const_iterator position); ```
	Class Template unordered_multiset	类模板 unordered_multiset
	:idprefix: unordered_multiset_	:idprefix: unordered_multiset_
	Erase by Value	通过值擦除
	erase_return_void	erase_return_void
	merge	合并
	Invalidates iterators to transferred elements.	使指向被转移元素的迭代器失效。
	Invalidates iterators belonging to `*this`.	使属于 `*this` 的迭代器失效。
	Iterators to non-transferred elements in `source` remain valid.	指向 `source` 中未被转移元素的迭代器保持有效。
	--	--
	key_eq	key_eq
	``` key_equal key_eq() const; ```	``` key_equal key_eq() const; ```
	Returns:;; The container's key equality predicate	返回：容器的键相等谓词。
	Lookup	查找
	find	find
	equal_range	equal_range
	```c++ const_local_iterator cend(size_type n) const; ```	```c++ const_local_iterator cend(size_type n) const; ```
	Requires:;; `n` shall be in the range `[0, bucket_count())`. Returns:;; A constant local iterator pointing the 'one past the end' element in the bucket with index `n`.	要求：`n` 必须在 `[0, bucket_count())` 范围内。返回：指向索引为 `n` 的桶中“尾后”元素的常量局部迭代器。
	A deduction guide will not participate in overload resolution if any of the following are true:	如果满足以下任一条件，则推导指引不会参与重载决议：
	Equality Comparisons	相等性比较
	operator	运算符
	Swaps the contents of `x` and `y`.	交换 `x` 和 `y` 的内容。
	```c++ template<class K, class H, class P, class A, class Predicate> typename unordered_multiset<K, H, P, A>::size_type erase_if(unordered_multiset<K, H, P, A>& c, Predicate pred); ```	```c++ template<class k,="" class="" h,="" p,="" a,="" predicate=""> typename unordered_multiset<k, h,="" p,="" a="">::size_type erase_if(unordered_multiset<k, h,="" p,="" a="">& c, Predicate pred); ```</k,></k,></class>

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