Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Node Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an …

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Key	English	Chinese (Simplified Han script)
	Returns:;; `size() == 0`	返回值：;; `size() == 0`（容器为空时返回 true，否则返回 false）
:970	---	---
	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，返回的值可能无法精确反映函数执行完成后哈希表的真实大小。
:985	---	---
	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）。
:996	---	---
	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:;; If `args...` is of the form `k,v`, it delays constructing the whole object until it is certain that an element should be inserted, using only the `k` argument to check.	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：;; 当对当前对象执行重哈希操作时会阻塞。注意：;; 若 `args...` 格式为 `k,v`，则会仅使用参数 `k` 进行键检查，直到确定需要插入元素时，才会构造完整对象。
:1013	---	---
	Copy Insert	复制插入
	```c++ bool insert(const value_type& obj); bool insert(const init_type& obj); ```	```c++ bool insert(const value_type& obj); bool insert(const init_type& obj); ```
:1021	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键等价的元素时，将`obj`插入表中。
	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:;; A call of the form `insert(x)`, where `x` is equally convertible to both `const value_type&` and `const init_type&`, is not ambiguous and selects the `init_type` overload.	要求：;; `value_type` 满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] 要求。返回值：;; 成功执行插入操作则返回 `true`。并发特性：;; 对当前对象执行重哈希操作时会发生阻塞。注意：;; 若调用形式为 `insert(x)`，且 `x` 可同时隐式转换为 `const value_type&` 与 `const init_type&`，该调用不存在歧义，会选用 `init_type` 重载版本。
:1029	---	---
	Move Insert	移动插入
	```c++ bool insert(value_type&& obj); bool insert(init_type&& obj); ```	```c++ bool insert(value_type&& obj); bool insert(init_type&& obj); ```
:1037	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，将`obj`插入表中。
	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:;; A call of the form `insert(x)`, where `x` is equally convertible to both `value_type&&` and `init_type&&`, is not ambiguous and selects the `init_type` overload.	要求：;; `value_type` 满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^] 要求。返回值：;; 成功执行插入操作则返回 `true`。并发特性：;; 对当前对象执行重哈希操作时会发生阻塞。注意：;; 若调用形式为 `insert(x)`，且 `x` 可同时转换为 `value_type&&` 与 `init_type&&`，该调用不存在歧义，会选用 `init_type` 重载版本。
:1045	---	---
	Insert Iterator Range	迭代器范围插入
	```c++ template<class InputIterator> size_type insert(InputIterator first, InputIterator last); ```	```c++ template<class inputiterator=""> size_type insert(InputIterator first, InputIterator last); ```</class>
:1052	Equivalent to [listing,subs="+macros,+quotes"]	等价于 [listing,subs="+macros,+quotes"]
:1059	Returns:;; The number of elements inserted.	返回值：;; 成功插入的元素数量。

	English	Chinese (Simplified Han script)	Actions
	Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] Concurrency:;; Blocking on `*this` and `other`.	要求：;; `value_type` 必须满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入] 并发：;; 阻塞 `*this` 与 `other`
	Move Assignment	移动赋值
	```c++ concurrent_node_map& operator=(std::initializer_list<value_type> il); ```	```c++ concurrent_node_map& operator=(std::initializer_list<value_type> il); ```</value_type>
	Assign from values in initializer list. All previously existing elements are destroyed.	通过初始化列表赋值。销毁所有已存在的元素。
	Visitation	访问操作
	```c++ template<class F> size_t visit(const key_type& k, F f); template<class F> size_t visit(const key_type& k, F f) const; template<class F> size_t cvisit(const key_type& k, F f) const; template<class K, class F> size_t visit(const K& k, F f); template<class K, class F> size_t visit(const K& k, F f) const; template<class K, class F> size_t cvisit(const K& k, F f) const; ```	```c++ template<class f=""> size_t visit(const key_type& k, F f); template<class f=""> size_t visit(const key_type& k, F f) const; template<class f=""> size_t cvisit(const key_type& k, F f) const; template<class k,="" class="" f=""> size_t visit(const K& k, F f); template<class k,="" class="" f=""> size_t visit(const K& k, F f) const; template<class k,="" class="" f=""> size_t cvisit(const K& k, F f) const; ```</class></class></class></class></class></class>
	If an element `x` exists with key equivalent to `k`, invokes `f` with a reference to `x`. Such reference is const iff `*this` is const.	若存在键与 `k` 等价的元素 `x`，则以 `x` 的引用调用函数 `f`。当且仅当 `*this` 为常量时，该引用为常量引用。
	Returns:;; The number of elements visited.	返回值：;; 被访问的元素数量。
	Parallel [c]visit_all	并行 ++[++c++]++visit++_++all
	```c++ template<class ExecutionPolicy, class F> bool visit_while(ExecutionPolicy&& policy, F f); template<class ExecutionPolicy, class F> bool visit_while(ExecutionPolicy&& policy, F f) const; template<class ExecutionPolicy, class F> bool cvisit_while(ExecutionPolicy&& policy, F f) const; ```	```c++ template<class executionpolicy,="" class="" f=""> bool visit_while(ExecutionPolicy&& policy, F f); template<class executionpolicy,="" class="" f=""> bool visit_while(ExecutionPolicy&& policy, F f) const; template<class executionpolicy,="" class="" f=""> bool cvisit_while(ExecutionPolicy&& policy, F f) const; ```</class></class></class>
	Size and Capacity	大小与容量
	empty	空
	```c++ [[nodiscard]] bool empty() const noexcept; ```	```c++ [[nodiscard]] bool empty() const noexcept; ```
	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，返回的值可能无法精确反映函数执行完成后哈希表的真实大小。
	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:;; If `args...` is of the form `k,v`, it delays constructing the whole object until it is certain that an element should be inserted, using only the `k` argument to check.	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：;; 当对当前对象执行重哈希操作时会阻塞。注意：;; 若 `args...` 格式为 `k,v`，则会仅使用参数 `k` 进行键检查，直到确定需要插入元素时，才会构造完整对象。
	Move Insert	移动插入
	```c++ bool insert(value_type&& obj); bool insert(init_type&& obj); ```	```c++ bool insert(value_type&& obj); bool insert(init_type&& obj); ```
	Insert Iterator Range	迭代器范围插入
	```c++ template<class F> bool insert_or_visit(const value_type& obj, F f); template<class F> bool insert_or_cvisit(const value_type& obj, F f); template<class F> bool insert_or_visit(const init_type& obj, F f); template<class F> bool insert_or_cvisit(const init_type& obj, F f); ```	```c++ template<class f=""> bool insert_or_visit(const value_type& obj, F f); template<class f=""> bool insert_or_cvisit(const value_type& obj, F f); template<class f=""> bool insert_or_visit(const init_type& obj, F f); template<class f=""> bool insert_or_cvisit(const init_type& obj, F f); ```</class></class></class></class>
	Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`. Notes:;; This function is similiar to xref:#concurrent_node_map_emplace[emplace], with the difference that no `value_type` is constructed if there is an element with an equivalent key; otherwise, the construction is of the form: + + -- ```c++	返回值：;; 若执行插入操作则返回 true。并发特性：;; 阻塞对 *this 的重哈希操作。注意：;; 该函数与 xref:#concurrent_node_map_emplace [emplace] 类似，区别在于：若表中已存在等价键的元素，则不会构造 value_type；否则，构造方式如下：
	The `template<class K, class\... Args>` 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.	仅当 Hash::is_transparent 与 Pred::is_transparent 为合法的成员类型别名时，template<class k,="" args=""> 这个重载版本才会参与重载决议。库实现假定 Hash 可同时接受 K 类型与 Key 类型作为参数，且 Pred 是透明的。这一特性支持异构查找，从而避免实例化 Key 类型对象带来的性能开销。</class>
	```c++ template<class... Args, class F> bool try_emplace_or_visit(const key_type& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_cvisit(const key_type& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_visit(key_type&& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_cvisit(key_type&& k, Args&&... args, F&& f); template<class K, class... Args, class F> bool try_emplace_or_visit(K&& k, Args&&... args, F&& f); template<class K, class... Args, class F> bool try_emplace_or_cvisit(K&& k, Args&&... args, F&& f); ```	```c++ template<class... args,="" class="" f=""> bool try_emplace_or_visit(const key_type& k, Args&&... args, F&& f); template<class... args,="" class="" f=""> bool try_emplace_or_cvisit(const key_type& k, Args&&... args, F&& f); template<class... args,="" class="" f=""> bool try_emplace_or_visit(key_type&& k, Args&&... args, F&& f); template<class... args,="" class="" f=""> bool try_emplace_or_cvisit(key_type&& k, Args&&... args, F&& f); template<class k,="" class...="" args,="" class="" f=""> bool try_emplace_or_visit(K&& k, Args&&... args, F&& f); template<class k,="" class...="" args,="" class="" f=""> bool try_emplace_or_cvisit(K&& k, Args&&... args, F&& f); ```</class></class></class...></class...></class...></class...>
	Returns:;; The number of elements erased (0 or 1). Throws:;; Only throws an exception if it is thrown by `hasher`, `key_equal` or `f`. Notes:;; `f` is passed a non-const reference to `x`. + + The `template<class K, class F>` overload only participates in overload resolution if `std::is_execution_policy_v<std::remove_cvref_t<ExecutionPolicy>>` is `false`. + + The `template<class K, class F>` 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：;; 删除的元素数量（0 或 1）。抛出异常：;; 仅当 `hasher`、`key_equal` 或 `f` 抛出异常时才会抛出。注意：;; `f` 接收指向 `x` 的非常量引用。 `template<class k,="" class="" f="">` 重载版本仅在 `std::is_execution_policy_v<std::remove_cvref_t<executionpolicy>>` 为 `false` 时参与重载决议。 `template<class k,="" class="" f="">` 重载版本仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 为有效成员类型别名时参与重载决议。库假定 `Hash` 可同时接受 `K` 类型与 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class></std::remove_cvref_t<executionpolicy></class>
	```c++ template<class F> size_type erase_if(F f); ```	```c++ template<class f=""> size_type erase_if(F f); ```</class>
	swap	交换
	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：;; 一个存储被提取元素的 `node_type` 对象；若未提取任何元素，则为空。抛出异常：;; 仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出。注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员类型别名时，`template<class k="">` 重载版本才参与重载决议。库假定 `Hash` 可同时接受 `K` 类型与 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class>
	```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`.	若存在键与 `k` 等价的元素 `x`，且 `f(x)` 返回 `true`，则提取该元素。
	clear	清空

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Chinese (Simplified Han script) 269 characters editedCurrent translationState: Translated

~~Requires:~~要求：;; `value_type` ~~is constructible from àrgs`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; If~~可由参数 àrgs` 构造。
返回值：;; 成功插入元素时返回 `true`。
并发特性：;; 当对当前对象执行重哈希操作时会阻塞。
注意：;; 若 àrgs...` ~~is of the form `k,v`, it delays constructing the whole object until it is certain that an element should be inserted, using only the `k` argument to check.~~格式为 `k,v`，则会仅使用参数 `k` 进行键检查，**直到确定需要插入元素时**，才会构造完整对象。

06/05/2026

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Chinese (Simplified Han script) 324 characters editedPrevious translationState: Needs editing (Needs rewriting)

06/05/2026

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