Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Flat Set (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Returns:;; `size()` of the largest possible table.

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Key	English	Chinese (Simplified Han script)
	Invokes `f` with const references to each of the elements in the table until `f` returns `false` or all the elements are visited. Execution is parallelized according to the semantics of the execution policy specified.	以指向哈希表中每个元素的常量引用调用函数 `f`，直到 `f` 返回 `false` 或遍历完所有元素。执行过程会根据指定执行策略的语义进行并行化。
	Returns:;; `false` iff `f` ever returns `false`. Throws:;; Depending on the exception handling mechanism of the execution policy used, may call `std::terminate` if an exception is thrown within `f`. Notes:;; Only available in compilers supporting C++17 parallel algorithms. + + These overloads only participate in overload resolution if `std::is_execution_policy_v<std::remove_cvref_t<ExecutionPolicy>>` is `true`. + + Unsequenced execution policies are not allowed. + + Parallelization implies that execution does not necessary finish as soon as `f` returns `false`, and as a result `f` may be invoked with further elements for which the return value is also `false`.	返回值：;; 当且仅当 `f` 返回过 `false` 时，返回 `false`。抛出异常：;; 根据所使用执行策略的异常处理机制，若 `f` 内部抛出异常，则可能调用 `std::terminate`。注意：;; 仅在支持 C++17 并行算法的编译器中可用。仅当 `std::is_execution_policy_v<std::remove_cvref_t<executionpolicy>>` 为 `true` 时，这些重载版本才会参与重载决议。不允许使用无序执行策略。并行化意味着执行流程不会在 `f` 返回 `false` 时立即终止，因此 `f` 可能还会被后续元素调用并同样返回 `false`。</std::remove_cvref_t<executionpolicy>
:846	---	---
	Size and Capacity	大小与容量
	empty	空
	```c++ [[nodiscard]] bool empty() const noexcept; ```	```c++ [[nodiscard]] bool empty() const noexcept; ```
	Returns:;; `size() == 0`	返回值：;; `size() == 0`
:859	---	---
	size	大小
	```c++ size_type size() const noexcept; ```	```c++ size_type size() const noexcept; ```
	Returns:;; The number of elements in the table.	返回值：;; 哈希表中的元素总数。
	Notes:;; In the presence of concurrent insertion operations, the value returned may not accurately reflect the true size of the table right after execution.	注意：;; 在存在并发插入操作时，返回的值可能无法准确反映函数执行后哈希表的真实大小。
:874	---	---
	max_size	max_size
	```c++ size_type max_size() const noexcept; ```	```c++ size_type max_size() const noexcept; ```
	Returns:;; `size()` of the largest possible table.	返回值：;; 哈希表能容纳的最大元素数量（最大容量）。
:885	---	---
	Modifiers	修改器
	emplace	原地构造
	```c++ template<class... Args> bool emplace(Args&&... args); ```	```c++ template<class... args=""> bool emplace(Args&&... args); ```</class...>
	Inserts an object, constructed with the arguments `args`, in the table if and only if there is no element in the table with an equivalent key.	当且仅当哈希表中不存在等价键的元素时，才会使用参数 `args` 构造对象并插入到哈希表中。
	Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued.	前置要求：;; `value_type` 可由参数 `args` 构造。返回值：;; 成功插入元素时返回 `true`。并发特性：;; 若触发重哈希，则会阻塞当前对象 `*this`。注意：;; 若执行重哈希，将使指向元素的指针和引用失效。
:902	---	---
	Copy Insert	复制插入
	```c++ bool insert(const value_type& obj); ```	```c++ bool insert(const value_type& obj); ```
:909	Inserts `obj` in the table if and only if there is no element in the table with an equivalent key.	当且仅当哈希表中不存在等价键的元素时，才将 `obj` 插入到哈希表中。
:912	Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]. Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued.	前置要求：;; `value_type` 满足可复制插入要求。返回值：;; 成功插入元素时返回 `true`。并发特性：;; 若触发重哈希，则会阻塞当前对象 `*this`。注意：;; 若执行重哈希，将使指向元素的指针和引用失效。
:917	---	---
	Move Insert	移动插入
	```c++ bool insert(value_type&& obj); ```	```c++ bool insert(value_type&& obj); ```
:924	Inserts `obj` in the table if and only if there is no element in the table with an equivalent key.	当且仅当哈希表中不存在等价键的元素时，才将 `obj` 插入到哈希表中。

	English	Chinese (Simplified Han script)	Actions
	reset_stats	reset_stats
	Assignment	赋值操作
	```c++ concurrent_flat_set& operator=(concurrent_flat_set const& other); ```	```c++ concurrent_flat_set& operator=(concurrent_flat_set const& other); ```
	```c++ template<class F> bool insert_or_visit(value_type&& obj, F f); template<class F> bool insert_or_cvisit(value_type&& obj, F f); ```	```c++ template<class f=""> bool insert_or_visit(value_type&& obj, F f); template<class f=""> bool insert_or_cvisit(value_type&& obj, F f); ```</class></class>
	```c++ void reset_stats() noexcept; ```	```c++ void reset_stats() noexcept; ```
	empty	空
	_Allocator_	_Allocator_
	Modifiers	修改器
	Returns:;; `size()` of the largest possible table.	返回值：;; 哈希表能容纳的最大元素数量（最大容量）。
	Transparent Insert	透明插入
	```c++ template<class K> bool insert(K&& k); ```	```c++ template<class k=""> bool insert(K&& k); ```</class>
	Inserts an element constructed from `std::forward<K>(k)` in the container if and only if there is no element in the container with an equivalent key.	当且仅当容器中不存在等价键的元素时，才会使用 `std::forward<k>(k)` 构造元素并插入到容器中。</k>
	Move insert_or_[c]visit	移动 insert++_++or++_[++c++]++visit
	A deduction guide will not participate in overload resolution if any of the following are true:	如果以下任何一条件为真，则推导指引将不参与重载决议：
	A `size_type` parameter type in a deduction guide refers to the `size_type` member type of the container type deduced by the deduction guide. Its default value coincides with the default value of the constructor selected.	推导指引中的 `size++_++type` 参数类型，指向由该推导指引所推导容器类型的 `size++_++type` 成员类型。其默认值与所选构造函数的默认值一致。
	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).	若 x.size() == y.size()，且对于 x 中的每个元素，y 中均存在一个具有相同键、值相等（使用 operator== 比较值类型）的元素，则返回 true。
	operator!	operator!
	```c++ template<class Key, class Hash, class Pred, class Alloc> bool operator!=(const concurrent_flat_set<Key, Hash, Pred, Alloc>& x, const concurrent_flat_set<Key, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" hash,="" pred,="" alloc=""> bool operator!=(const concurrent_flat_set<key, hash,="" pred,="" alloc="">& x, const concurrent_flat_set<key, hash,="" pred,="" alloc="">& y); ```</key,></key,></class>
	Swap	交换
	```cpp static constexpr size_type bulk_visit_size; ```	```cpp static constexpr size_type bulk_visit_size; ```
	Chunk size internally used in xref:concurrent_flat_set_bulk_visit[bulk visit] operations.	xref:concurrent_flat_set_bulk_visit[批量访问]操作内部使用的块大小。
	Constructors	构造函数
	Default Constructor	默认构造函数
	- 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。
	Equality Comparisons	相等性比较
	operator	operator
	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).	若 x.size() == y.size()，且对于 x 中的每个元素，y 中均存在一个具有相同键、值相等（使用 operator== 比较值类型）的元素，则返回 false。
	``concurrent_flat_set``s can be archived/retrieved by means of link:../../../../../serialization/index.html[Boost.Serialization^] using the API provided by this library. Both regular and XML archives are supported.	可通过本库提供的 API ，借助 link:../../../../../serialization/index.html[Boost.Serialization] 实现档归档/检索 `concurrent++_++flat++_++set` 。同时支持常规格式与 XML 格式的归档文件。
	Saves all the elements of a `concurrent_flat_set` `x` to an archive (XML archive) `ar`.	将 `concurrent++_++flat++_++set` 容器 `x` 的所有元素保存到归档（XML 归档） `ar` 中。
	Deletes all preexisting elements of a `concurrent_flat_set` `x` and inserts from an archive (XML archive) `ar` restored copies of the elements of the original `concurrent_flat_set` `other` saved to the storage read by `ar`.	删除 `concurrent++_++flat++_++set` 容器 `x` 中的所有现有元素，并从归档 `ar` （XML格式归档）中读取原始 `concurrent++_++flat++_++set` 容器 `other` 保存的元素副本并插入到 `x` 。

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