Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Flat Set (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Globally define this macro to enable xref:reference/stats.adoc#stats[statistics calculation] for the …

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	If an operation op is explicitly designated as _blocking on_ `x`, where `x` is an instance of a `boost::concurrent_flat_set`, prior blocking operations on `x` synchronize with op. So, blocking operations on the same `concurrent_flat_set` execute sequentially in a multithreaded scenario.	若操作 op 显式指定为__阻塞于__ 容器 `x` （其中 `x` 是 `boost::concurrent++_++flat++_++set` 的实例），则先前对 `x` 的阻塞操作将与 op 同步。因此，在多线程场景下，对同一 `concurrent++_++flat++_++set` 的阻塞操作将按顺序执行。
	An operation is said to be _blocking on rehashing of_ ``__x__`` if it blocks on `x` only when an internal rehashing is issued.	若某个操作仅在触发内部重哈希时才会阻塞于 _`x`_，则称该操作__阻塞于 _`x`_ 的重哈希过程__。
	When executed internally by a `boost::concurrent_flat_set`, the following operations by a user-provided visitation function on the element passed do not introduce data races:	当由 `boost::concurrent++_++flat++_++set` 内部执行时，用户提供的访问函数对传入元素的以下操作不会引发数据竞争：
	Read access to the element.	对元素的读取访问。
	Non-mutable modification of the element.	对元素的非可变修改。
	Mutable modification of the element:	对元素的可变修改：
	Within a container function accepting two visitation functions, always for the first function. Within a non-const container function whose name does not contain `cvisit`, for the last (or only) visitation function.	在容器接受两个访问函数的操作中，此条件始终适用于第一个访问函数。在名称不包含 `cvisit` 的非常量容器函数中，此条件适用于最后一个（或唯一一个）访问函数。
	Any `boost::concurrent_flat_set operation` that inserts or modifies an element `e` synchronizes with the internal invocation of a visitation function on `e`.	任何插入或修改元素 `e` 的 `boost::concurrent++_++flat++_++set` 操作都会与在 `e` 的内部调用的访问函数同步。
	Visitation functions executed by a `boost::concurrent_flat_set` `x` are not allowed to invoke any operation on `x`; invoking operations on a different `boost::concurrent_flat_set` instance `y` is allowed only if concurrent outstanding operations on `y` do not access `x` directly or indirectly.	由 `boost::concurrent++_++flat++_++set` `x` 执行的访问函数不允许调用 `x` 上的任何操作；若并发未完成操作不直接或间接访问 `x` ，则允许调用不同 `boost::concurrent++_++flat++_++set` 实例 `y` 上的操作。
:362	---	---
	Configuration Macros	配置宏
	`BOOST_UNORDERED_DISABLE_REENTRANCY_CHECK`	`BOOST++_++UNORDERED++_++DISABLE++_++REENTRANCY++_++CHECK`
	In debug builds (more precisely, when link:../../../../../assert/doc/html/assert.html#boost_assert_is_void[`BOOST_ASSERT_IS_VOID`^] is not defined), __container reentrancies__ (illegaly invoking an operation on `m` from within a function visiting elements of `m`) are detected and signalled through `BOOST_ASSERT_MSG`. When run-time speed is a concern, the feature can be disabled by globally defining this macro.	在调试版本中（更准确地说，当未定义 link:../../../../../assert/doc/html/assert.html#boost_assert_is_void[`BOOST++_++ASSERT++_++IS++_++VOID`] 时），系统会检测__容器重入__行为（即在访问 `m` 元素的函数内部非法调用 `m` 上的操作），并通过 `BOOST++_++ASSERT++_++MSG` 发出信号。若需关注运行时速度，可通过全局定义此宏来禁用该功能。
:375	---	---
	`BOOST_UNORDERED_ENABLE_STATS`	`BOOST_UNORDERED_ENABLE_STATS`
	Globally define this macro to enable xref:reference/stats.adoc#stats[statistics calculation] for the table. Note that this option decreases the overall performance of many operations.	全局定义此宏以启用容器的 xref:reference/stats.adoc#stats[统计计算] 功能。请注意，此选项会降低多数操作的总体性能。
:382	---	---
	Constants	常量
	```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
	```c++ concurrent_flat_set(); ```	```c++ concurrent_flat_set(); ```
	Constructs an empty table using `hasher()` as the hash function, `key_equal()` as the key equality predicate and `allocator_type()` as the allocator.	构造一个空容器，使用`hasher()`作为哈希函数，`key_equal()`作为键相等谓词，`allocator_type()`作为分配器。
:403	Postconditions:;; `size() == 0` Requires:;; If the defaults are used, `hasher`, `key_equal` and `allocator_type` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].	后置条件：`size() == 0` 要求：若使用默认参数，则 `hasher`、`key_equal` 和 `allocator_type` 需满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^] 要求。
:406	---	---
	Bucket Count Constructor	桶数构造函数
	```c++ explicit concurrent_flat_set(size_type n, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()); ```	```c++ explicit concurrent_flat_set(size_type n, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()); ```
	Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate, and `a` as the allocator.	构造一个拥有至少`n`个桶的空容器，使用`hf`作为哈希函数，`eql`作为键相等谓词，`a`作为分配器。
:420	Postconditions:;; `size() == 0` Requires:;; If the defaults are used, `hasher`, `key_equal` and `allocator_type` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].	后置条件：`size() == 0` 要求：若使用默认参数，则 `hasher`、`key_equal` 和 `allocator_type` 需满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^] 要求。
:423	---	---

Key	English	Chinese (Simplified Han script)
	In debug builds (more precisely, when link:../../../../../assert/doc/html/assert.html#boost_assert_is_void[`BOOST_ASSERT_IS_VOID`^] is not defined), __container reentrancies__ (illegaly invoking an operation on `m` from within a function visiting elements of `m`) are detected and signalled through `BOOST_ASSERT_MSG`. When run-time speed is a concern, the feature can be disabled by globally defining this macro.	在调试版本中（更准确地说，当未定义 link:../../../../../assert/doc/html/assert.html#boost_assert_is_void[`BOOST++_++ASSERT++_++IS++_++VOID`] 时），系统会检测__容器重入__行为（即在访问 `m` 元素的函数内部非法调用 `m` 上的操作），并通过 `BOOST++_++ASSERT++_++MSG` 发出信号。若需关注运行时速度，可通过全局定义此宏来禁用该功能。
	```c++ concurrent_flat_set(concurrent_flat_set const& other); ```	```c++ concurrent_flat_set(concurrent_flat_set const& other); ```
	Copy Constructor	复制构造函数
	Globally define this macro to enable xref:reference/stats.adoc#stats[statistics calculation] for the table. Note that this option decreases the overall performance of many operations.	全局定义此宏以启用容器的 xref:reference/stats.adoc#stats[统计计算] 功能。请注意，此选项会降低多数操作的总体性能。
	`BOOST_UNORDERED_ENABLE_STATS`	`BOOST_UNORDERED_ENABLE_STATS`
	`std::allocator_traits<Alloc>::allocate`	`std::allocator_traits<alloc>::allocate`</alloc>
	In general, these requirements on `Hash`, `Pred` and `Allocator` are met if these types are not stateful or if the operations only involve constant access to internal data members.	通常而言，若 `Hash` 、 `Pred` 和 `Allocator` 这些类型不包含状态，或其操作仅涉及对内部数据成员的常量访问，即可满足上述要求。
	With the exception of destruction, concurrent invocations of any operation on the same instance of a `concurrent_flat_set` do not introduce data races — that is, they are thread-safe.	除析构操作外，对同一个 `concurrent++_++flat++_++set` 实例并发调用任何操作都不会引发数据竞争——即这些操作是线程安全的。
	If an operation op is explicitly designated as _blocking on_ `x`, where `x` is an instance of a `boost::concurrent_flat_set`, prior blocking operations on `x` synchronize with op. So, blocking operations on the same `concurrent_flat_set` execute sequentially in a multithreaded scenario.	若操作 op 显式指定为__阻塞于__ 容器 `x` （其中 `x` 是 `boost::concurrent++_++flat++_++set` 的实例），则先前对 `x` 的阻塞操作将与 op 同步。因此，在多线程场景下，对同一 `concurrent++_++flat++_++set` 的阻塞操作将按顺序执行。
	An operation is said to be _blocking on rehashing of_ ``__x__`` if it blocks on `x` only when an internal rehashing is issued.	若某个操作仅在触发内部重哈希时才会阻塞于 _`x`_，则称该操作__阻塞于 _`x`_ 的重哈希过程__。
	When executed internally by a `boost::concurrent_flat_set`, the following operations by a user-provided visitation function on the element passed do not introduce data races:	当由 `boost::concurrent++_++flat++_++set` 内部执行时，用户提供的访问函数对传入元素的以下操作不会引发数据竞争：
	Non-mutable modification of the element.	对元素的非可变修改。
	Mutable modification of the element:	对元素的可变修改：
	Within a container function accepting two visitation functions, always for the first function. Within a non-const container function whose name does not contain `cvisit`, for the last (or only) visitation function.	在容器接受两个访问函数的操作中，此条件始终适用于第一个访问函数。在名称不包含 `cvisit` 的非常量容器函数中，此条件适用于最后一个（或唯一一个）访问函数。
	Any `boost::concurrent_flat_set operation` that inserts or modifies an element `e` synchronizes with the internal invocation of a visitation function on `e`.	任何插入或修改元素 `e` 的 `boost::concurrent++_++flat++_++set` 操作都会与在 `e` 的内部调用的访问函数同步。
	Visitation functions executed by a `boost::concurrent_flat_set` `x` are not allowed to invoke any operation on `x`; invoking operations on a different `boost::concurrent_flat_set` instance `y` is allowed only if concurrent outstanding operations on `y` do not access `x` directly or indirectly.	由 `boost::concurrent++_++flat++_++set` `x` 执行的访问函数不允许调用 `x` 上的任何操作；若并发未完成操作不直接或间接访问 `x` ，则允许调用不同 `boost::concurrent++_++flat++_++set` 实例 `y` 上的操作。
	`BOOST_UNORDERED_DISABLE_REENTRANCY_CHECK`	`BOOST++_++UNORDERED++_++DISABLE++_++REENTRANCY++_++CHECK`
	```c++ size_type max_size() const noexcept; ```	```c++ size_type max_size() const noexcept; ```
:1000	---	---
:1008	Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.	当且仅当哈希表中不存在等价键的元素时，才将 `obj` 插入表中；否则，以等价元素的常量引用为参数调用函数 `f`。
:1012	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。
:1017	---	---
:1025	Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a const reference to the equivalent element.	当且仅当哈希表中不存在等价键的元素时，才将 `obj` 插入表中；否则，以等价元素的常量引用为参数调用函数 `f`。
:1029	Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. 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` 满足可移动插入要求。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。
:1034	---	---
:1046	Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] from `k`. 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. + + These overloads only participate 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.	前置要求：;; `value_type` 可通过 `k` 原位构造。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。仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员别名时，该组重载才参与重载决议。库假定 `Hash` 可同时接收 `K` 与 `Key` 类型调用，且 `Pred` 是透明的。这支持异构查找，避免实例化 `Key` 类型对象的开销。
:1053	---	---
:1063	Equivalent to [listing,subs="+macros,+quotes"]	等效于 [listing,subs="+macros,+quotes"]
:1070	Returns:;; The number of elements inserted.	返回值：;; 成功插入的元素数量。
:1072	---	---

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