Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Node Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Assign from values in initializer list. All previously existing elements …

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Key	English	Chinese (Simplified Han script)
	```c++ ~concurrent_node_map(); ```	```c++ ~concurrent_node_map(); ```
	Note:;; The destructor is applied to every element, and all memory is deallocated	注意：;; 析构函数会作用于所有元素，且所有内存都会被释放
:767	---	---
	Assignment	赋值操作
	Copy Assignment	复制赋值
	```c++ concurrent_node_map& operator=(concurrent_node_map const& other); ```	```c++ concurrent_node_map& operator=(concurrent_node_map const& other); ```
	The assignment operator. Destroys previously existing elements, copy-assigns the hash function and predicate from `other`, copy-assigns the allocator from `other` if `Alloc::propagate_on_container_copy_assignment` exists and `Alloc::propagate_on_container_copy_assignment::value` is `true`, and finally inserts copies of the elements of `other`.	赋值运算符。销毁已存在的所有元素，从 `other` 复制赋值哈希函数和谓词；若 `Alloc::propagate_on_container_copy_assignment` 存在且其值为 `true`，则从 `other` 复制赋值分配器；最后插入 `other` 元素的副本。
	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`
:785	---	---
	Move Assignment	移动赋值
	```c++ concurrent_node_map& operator=(concurrent_node_map&& other) noexcept((boost::allocator_traits<Allocator>::is_always_equal::value \|\| boost::allocator_traits<Allocator>::propagate_on_container_move_assignment::value) && std::is_same<pointer, value_type>::value); ``` The move assignment operator. Destroys previously existing elements, swaps the hash function and predicate from `other`, and move-assigns the allocator from `other` if `Alloc::propagate_on_container_move_assignment` exists and `Alloc::propagate_on_container_move_assignment::value` is `true`. If at this point the allocator is equal to `other.get_allocator()`, the internal bucket array of `other` is transferred directly to `this`; otherwise, inserts move-constructed copies of the elements of `other`. If statistics are xref:concurrent_node_map_boost_unordered_enable_stats[enabled], transfers the internal statistical information from `other` iff the final allocator is equal to `other.get_allocator()`, and always calls `other.reset_stats()`.	```c++ concurrent_node_map& operator=(concurrent_node_map&& other) noexcept((boost::allocator_traits<allocator>::is_always_equal::value \|\| boost::allocator_traits<allocator>::propagate_on_container_move_assignment::value) && std::is_same<pointer, value_type="">::value); ```移动赋值运算符。销毁已存在的所有元素，与 `other` 交换哈希函数和谓词；若 `Alloc::propagate_on_container_move_assignment` 存在且其值为 `true`，则从 `other` 移动赋值分配器。若此时分配器与 `other.get_allocator()` 相等，则将 `other` 的内部桶数组直接转移给 `this`；否则插入 `other` 元素的移动构造副本。若启用了 xref:concurrent_node_map_boost_unordered_enable_stats[统计功能]，仅当最终分配器与 `other.get_allocator()` 相等时，从 `other` 转移内部统计信息，且始终调用 `other.reset_stats()`。</pointer,></allocator></allocator>
	Concurrency:;; Blocking on `*this` and `other`.	并发：;; 阻塞 `*this` 与 `other`
:805	---	---
	Initializer List Assignment	初始化列表赋值
	```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。
	Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] Concurrency:;; Blocking on `*this`.	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`
:818	---	---
	Visitation	访问操作
	[c]visit	[c]visit
	```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 (0 or 1). Notes:;; The `template<class K, class F>` 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.	返回值：;; 访问的元素数量（0 或 1）。注意：;; 仅当 `Hash::is_transparent` 与 `Pred::is_transparent` 为合法成员别名时，`template<class k,="" class="" f="">` 重载版本才会参与重载决议。库假定 `Hash` 可同时以 `K` 类型与 `Key` 类型调用，且 `Pred` 是透明的。这支持异构查找，避免了实例化 `Key` 类型对象的开销。</class>
:840	---	---
	Bulk visit	批量访问
	```c++ template<class FwdIterator, class F> size_t visit(FwdIterator first, FwdIterator last, F f); template<class FwdIterator, class F> size_t visit(FwdIterator first, FwdIterator last, F f) const; template<class FwdIterator, class F> size_t cvisit(FwdIterator first, FwdIterator last, F f) const; ```	```c++ template<class fwditerator,="" class="" f=""> size_t visit(FwdIterator first, FwdIterator last, F f); template<class fwditerator,="" class="" f=""> size_t visit(FwdIterator first, FwdIterator last, F f) const; template<class fwditerator,="" class="" f=""> size_t cvisit(FwdIterator first, FwdIterator last, F f) const; ```</class></class></class>
	For each element `k` in the range [`first`, `last`), if there is an element `x` in the container with key equivalent to `k`, invokes `f` with a reference to `x`. Such reference is const iff `*this` is const.	对范围 [`first`, `last`) 中的每个元素 `k`，若容器内存在键与 `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。
	Although functionally equivalent to individually invoking xref:concurrent_node_map_cvisit[`[c\]visit`] for each key, bulk visitation performs generally faster due to internal streamlining optimizations. It is advisable that `std::distance(first,last)` be at least xref:#concurrent_node_map_constants[`bulk_visit_size`] to enjoy a performance gain: beyond this size, performance is not expected to increase further.	尽管功能上等同于对每个键单独调用 `[c]visit`，但得益于内部的流式优化，批量访问通常性能更高。建议当 `std::distance(first,last)` 至少达到 `bulk_visit_size` 时使用批量访问以获得性能提升；超过该大小后，性能不会进一步提升。
	Requires:;; `FwdIterator` is a https://en.cppreference.com/w/cpp/named_req/ForwardIterator[LegacyForwardIterator^] ({cpp}11 to {cpp}17), or satisfies https://en.cppreference.com/w/cpp/iterator/forward_iterator[std::forward_iterator^] ({cpp}20 and later). For `K` = `std::iterator_traits<FwdIterator>::value_type`, either `K` is `key_type` or else `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. In the latter case, 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. Returns:;; The number of elements visited.	要求：;; `FwdIterator` 是前向迭代器（C++11 至 C++17），或满足 C++20 及之后标准的 `std::forward_iterator` 概念。对于 `K = std::iterator_traits<fwditerator>::value_type`，要么 `K` 是 `key_type`，要么 `Hash::is_transparent` 和 `Pred::is_transparent` 是合法的成员别名。在后一种情况下，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，避免了实例化 `Key` 类型对象的开销。返回值：;; 被访问的元素总数。</fwditerator>
:876	---	---
	[c]visit_all	[c]visit_all

	English	Chinese (Simplified Han script)	Actions
	__iter-to-alloc-type__	__iter-to-alloc-type__
	Equality Comparisons	相等性比较
	operator	operator
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> bool operator==(const concurrent_node_map<Key, T, Hash, Pred, Alloc>& x, const concurrent_node_map<Key, T, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> bool operator==(const concurrent_node_map<key, t,="" hash,="" pred,="" alloc="">& x, const concurrent_node_map<key, t,="" hash,="" pred,="" alloc="">& y); ```</key,></key,></class>
	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` 中均存在一个键相同、值相等（使用 `operator==` 比较值类型）的元素，则返回 `true`。
	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`x`中每个元素在`y`中都存在键相同、值相等（使用`operator==`比较值类型）的对应元素，则返回`false`。
	Swap	交换
	```c++ template<class K, class T, class H, class P, class A, class Predicate> typename concurrent_node_map<K, T, H, P, A>::size_type erase_if(concurrent_node_map<K, T, H, P, A>& c, Predicate pred); ```	```c++ template<class k,="" class="" t,="" h,="" p,="" a,="" predicate=""> typename concurrent_node_map<k, t,="" h,="" p,="" a="">::size_type erase_if(concurrent_node_map<k, t,="" h,="" p,="" a="">& c, Predicate pred); ```</k,></k,></class>
	Serialization	序列化
	Requires:;; `x.key_equal()` is functionally equivalent to `other.key_equal()`. Concurrency:;; Blocking on `x`.	要求;; `x.key++_++equal()` 需要在功能上等价于 `other.key++_++equal()` 。并发性;; 阻塞于 `x` 。
	The assignment operator. Destroys previously existing elements, copy-assigns the hash function and predicate from `other`, copy-assigns the allocator from `other` if `Alloc::propagate_on_container_copy_assignment` exists and `Alloc::propagate_on_container_copy_assignment::value` is `true`, and finally inserts copies of the elements of `other`.	赋值运算符。销毁已存在的所有元素，从 `other` 复制赋值哈希函数和谓词；若 `Alloc::propagate_on_container_copy_assignment` 存在且其值为 `true`，则从 `other` 复制赋值分配器；最后插入 `other` 元素的副本。
	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); ```

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