Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Node Set (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Returns:;; The number of elements inserted. Concurrency:;; Blocking on `*this` …

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Key	English	Chinese (Simplified Han script)
	Returns:;; A `node_type` object holding the extracted element, or empty if no element was extracted. 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. 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.	返回值：;; 存储提取元素的 `node_type` 对象，若未提取任何元素则为空。异常：;; 仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出异常。注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为合法成员类型别名时，`template<class k="">` 重载才参与重载决议。标准库假定 `Hash` 可同时接收 `K` 与 `Key` 类型参数调用，且 `Pred` 是透明的。该机制支持异构查找，避免了实例化 `Key` 类型对象的开销。</class>
:1397	---	---
	extract_if	条件提取
	```c++ template<class F> node_type extract_if(const key_type& k, F f); template<class K, class F> node_type extract_if(K&& k, F f); ```	```c++ template<class f=""> node_type extract_if(const key_type& k, F f); template<class k,="" class="" f=""> node_type extract_if(K&& k, F f); ```</class></class>
	Extracts the element `x` with key equivalent to `k`, if it exists and `f(x)` is `true`.	若键与 `k` 等价的元素 `x` 存在且 `f(x)` 为 `true`，则提取该元素。
	Returns:;; A `node_type` object holding the extracted element, or empty if no element was extracted. Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal` or `f`. Notes:;; The `template<class K>` overload only participates in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. 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.	返回值：;; 存储被提取元素的 `node_type` 对象，若未提取任何元素则为空。异常：;; 仅当 `hasher`、`key_equal` 或 `f` 抛出异常时才会抛出异常。注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为合法成员类型别名时，`template<class k="">` 重载才参与重载决议。标准库假定 `Hash` 可同时接收 `K` 与 `Key` 类型参数调用，且 `Pred` 是透明的。该机制支持异构查找，避免了实例化 `Key` 类型对象的开销。</class>
:1412	---	---
	clear	清空
	```c++ void clear() noexcept; ```	```c++ void clear() noexcept; ```
	Erases all elements in the table.	删除表中的所有元素。
	Postconditions:;; `size() == 0`, `max_load() >= max_load_factor() * bucket_count()` Concurrency:;; Blocking on `*this`.	后置条件：;; `size() == 0`，`max_load() >= max_load_factor() * bucket_count()` 并发：;; 阻塞 `*this`。
:1425	---	---
	merge	合并
	```c++ template<class H2, class P2> size_type merge(concurrent_node_set<Key, H2, P2, Allocator>& source); template<class H2, class P2> size_type merge(concurrent_node_set<Key, H2, P2, Allocator>&& source); ```	```c++ template<class h2,="" class="" p2=""> size_type merge(concurrent_node_set<key, h2,="" p2,="" allocator="">& source); template<class h2,="" class="" p2=""> size_type merge(concurrent_node_set<key, h2,="" p2,="" allocator="">&& source); ```</key,></class></key,></class>
	Move-inserts all the elements from `source` whose key is not already present in `*this`, and erases them from `source`.	将 `source` 中所有键尚未存在于 `*this` 内的元素移动插入，并从 `source` 中删除这些元素。
	Returns:;; The number of elements inserted. Concurrency:;; Blocking on `*this` and `source`.	返回值：;; 插入的元素数量。并发：;; 阻塞 `*this` 和 `source`。
:1441	---	---
	Observers	观察器
	get_allocator	get_allocator
	``` allocator_type get_allocator() const noexcept; ```	``` allocator_type get_allocator() const noexcept; ```
	Returns:;; The table's allocator.	返回值：;; 表的分配器。
:1453	---	---
	hash_function	哈希函数
	``` hasher hash_function() const; ```	``` hasher hash_function() const; ```
	Returns:;; The table's hash function.	返回值：;; 表的哈希函数。
:1463	---	---
	key_eq	key_eq
	``` key_equal key_eq() const; ```	``` key_equal key_eq() const; ```
	Returns:;; The table's key equality predicate.	返回值：;; 表的键相等性断言。
:1473	---	---
	Set Operations	集合操作

	English	Chinese (Simplified Han script)	Actions
	Swaps the contents of the table with the parameter.	将当前表与参数对象的内容进行交换。
	If `Allocator::propagate_on_container_swap` is declared and `Allocator::propagate_on_container_swap::value` is `true` then the tables' allocators are swapped. Otherwise, swapping with unequal allocators results in undefined behavior.	若 `Allocator::propagate_on_container_swap` 已声明且 `Allocator::propagate_on_container_swap::value` 为 `true`，则交换两个表的分配器。否则，使用不相等的分配器进行交换会导致未定义行为。
	extract	extract
	```c++ node_type extract(const key_type& k); template<class K> node_type extract(K&& k); ```	```c++ node_type extract(const key_type& k); template<class k=""> node_type extract(K&& k); ```</class>
	Extracts the element with key equivalent to `k`, if it exists.	返回值：;; 提取键与 `k` 等价的元素（若该元素存在）。
	Returns:;; A `node_type` object holding the extracted element, or empty if no element was extracted. 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. 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.	返回值：;; 存储提取元素的 `node_type` 对象，若未提取任何元素则为空。异常：;; 仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出异常。注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为合法成员类型别名时，`template<class k="">` 重载才参与重载决议。标准库假定 `Hash` 可同时接收 `K` 与 `Key` 类型参数调用，且 `Pred` 是透明的。该机制支持异构查找，避免了实例化 `Key` 类型对象的开销。</class>
	extract_if	条件提取
	```c++ size_type max_load() const noexcept; ```	```c++ size_type max_load() const noexcept; ```
	Returns:;; A `node_type` object holding the extracted element, or empty if no element was extracted. Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal` or `f`. Notes:;; The `template<class K>` overload only participates in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. 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.	返回值：;; 存储被提取元素的 `node_type` 对象，若未提取任何元素则为空。异常：;; 仅当 `hasher`、`key_equal` 或 `f` 抛出异常时才会抛出异常。注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为合法成员类型别名时，`template<class k="">` 重载才参与重载决议。标准库假定 `Hash` 可同时接收 `K` 与 `Key` 类型参数调用，且 `Pred` 是透明的。该机制支持异构查找，避免了实例化 `Key` 类型对象的开销。</class>
	clear	清空
	```c++ void clear() noexcept; ```	```c++ void clear() noexcept; ```
	Erases all elements in the table.	删除表中的所有元素。
	Postconditions:;; `size() == 0`, `max_load() >= max_load_factor() * bucket_count()` Concurrency:;; Blocking on `*this`.	后置条件：;; `size() == 0`，`max_load() >= max_load_factor() * bucket_count()` 并发：;; 阻塞 `*this`。
	merge	合并
	Move-inserts all the elements from `source` whose key is not already present in `*this`, and erases them from `source`.	将 `source` 中所有键尚未存在于 `*this` 内的元素移动插入，并从 `source` 中删除这些元素。
	Returns:;; The number of elements inserted. Concurrency:;; Blocking on `*this` and `source`.	返回值：;; 插入的元素数量。并发：;; 阻塞 `*this` 和 `source`。
	Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the table's hash function or comparison function. Concurrency:;; Blocking on `*this`.	抛出异常：;; 若抛出异常，函数无任何效果（由表的哈希函数或比较函数抛出的异常除外）。并发：;; 阻塞 `*this`。
	get_stats	get_stats
	```c++ stats get_stats() const; ```	```c++ stats get_stats() const; ```
	Returns:;; A statistical description of the insertion and lookup operations performed by the table so far. Notes:;; Only available if xref:reference/stats.adoc#stats[statistics calculation] is xref:concurrent_node_set_boost_unordered_enable_stats[enabled].	返回值：;; 截至目前，由该表执行的插入与查找操作的统计信息描述。注意：;; 仅当统计计算功能启用时可用。
	Effects:;; Sets to zero the internal statistics kept by the table. Notes:;; Only available if xref:reference/stats.adoc#stats[statistics calculation] is xref:concurrent_node_set_boost_unordered_enable_stats[enabled].	效果：;; 将该哈希表所维护的内部统计数据清零。注意：;; 仅当xref:reference/stats.adoc#stats[statistics calculation]（统计计算功能）被xref:concurrent_node_set_boost_unordered_enable_stats[enabled]（启用状态）激活时，本函数才可使用。
	- It has an `InputIterator` template parameter and a type that does not qualify as an input iterator is deduced for that parameter. - It has an `Allocator` template parameter and a type that does not qualify as an allocator is deduced for that parameter. - It has a `Hash` template parameter and an integral type or a type that qualifies as an allocator is deduced for that parameter. - It has a `Pred` template parameter and a type that qualifies as an allocator is deduced for that parameter.	- 该推导指引包含 `InputIterator` 模板参数，且为此参数推导出的类型不符合输入迭代器的要求。 - 该推导指引包含 `Allocator` 模板参数，且为该参数推导出的类型不符合分配器要求。 - 该推导指引包含 `Hash` 模板参数，且为该参数推导出的类型为整型或符合分配器要求。 - 该推导指引包含 `Pred` 模板参数，且为该参数推导出的类型符合分配器要求。
	__iter-value-type__	_iter-value-type_
	Equality Comparisons	相等性比较
	operator	operator
	Returns `true` if `x.size() == y.size()` and for every element in `x`, there is an element in `y` with the same key, with an equal value (using `operator==` to compare the value types).	返回值：;; 当且仅当 `x.size() == y.size()`，且对于 `x` 中的每个元素，`y` 中都存在一个拥有相同键、值相等（使用 `operator==` 比较值类型）的元素时，返回 `true`。
	operator!	operator!
	```c++ template<class Key, class Hash, class Pred, class Alloc> bool operator!=(const concurrent_node_set<Key, Hash, Pred, Alloc>& x, const concurrent_node_set<Key, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" hash,="" pred,="" alloc=""> bool operator!=(const concurrent_node_set<key, hash,="" pred,="" alloc="">& x, const concurrent_node_set<key, hash,="" pred,="" alloc="">& y); ```</key,></key,></class>
	Returns `false` if `x.size() == y.size()` and for every element in `x`, there is an element in `y` with the same key, with an equal value (using `operator==` to compare the value types).	返回值：;; 当 `x.size() == y.size()` 且对于 `x` 中的每个元素，`y` 中都存在一个拥有相同键、值相等（使用 `operator==` 比较值类型）的元素时，返回 `false`。
	Requires:;; `value_type` is serializable (XML serializable), and it supports Boost.Serialization `save_construct_data`/`load_construct_data` protocol (automatically suported by https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^] types). Concurrency:;; Blocking on `x`.	要求;; `value++_++type` 必须可序列化（支持 XML 序列化），且需要支持 Boost.Serialization 的 `save++_++construct++_++data` / `load++_++construct++_++data` 协议（该协议自动支持满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造] 要求的类型）。并发性;; 阻塞于 `x` 。

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