Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Unordered Set (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] into the container and https://en.cppreference.com/w/cpp/named

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Key	English	Chinese (Simplified Han script)
	Assignment	赋值操作
	Copy Assignment	复制赋值
	```c++ unordered_set& operator=(const unordered_set& other); ```	```c++ unordered_set& operator=(const unordered_set& other); ```
	The assignment operator. Copies the contained elements, hash function, predicate and maximum load factor but not the allocator.	赋值运算符。该操作会复制容器内的元素、哈希函数、谓词及最大负载因子，但不会复制分配器。
	If `Alloc::propagate_on_container_copy_assignment` exists and `Alloc::propagate_on_container_copy_assignment::value` is `true`, the allocator is overwritten, if not the copied elements are created using the existing allocator.	若 `Alloc::propagate_on_container_copy_assignment` 存在且 `Alloc::propagate_on_container_copy_assignment::value` 为 `true`，则覆盖分配器；否则，将使用现有分配器创建复制的元素。
:614	Requires:;; `value_type` is copy constructible	要求：`value_type` 需满足可复制构造要求。
:616	---	---
	Move Assignment	移动赋值
	```c++ unordered_set& operator=(unordered_set&& other) noexcept(boost::allocator_traits<Allocator>::is_always_equal::value && boost::is_nothrow_move_assignable_v<Hash> && boost::is_nothrow_move_assignable_v<Pred>); ``` The move assignment operator.	```c++ unordered_set& operator=(unordered_set&& other) noexcept(boost::allocator_traits<allocator>::is_always_equal::value && boost::is_nothrow_move_assignable_v<hash> && boost::is_nothrow_move_assignable_v<pred>); ``` 移动赋值运算符。</pred></hash></allocator>
	If `Alloc::propagate_on_container_move_assignment` exists and `Alloc::propagate_on_container_move_assignment::value` is `true`, the allocator is overwritten, if not the moved elements are created using the existing allocator.	若 `Alloc::propagate_on_container_move_assignment` 存在且 `Alloc::propagate_on_container_move_assignment::value` 为 `true`，则覆盖分配器；否则，将使用现有分配器创建移动的元素。
	Requires:;; `value_type` is move constructible.	要求：`value_type` 需满足可移动构造要求。
:632	---	---
	Initializer List Assignment	初始化列表赋值
	```c++ unordered_set& operator=(std::initializer_list<value_type> il); ```	```c++ unordered_set& operator=(std::initializer_list<value_type> il); ```</value_type>
	Assign from values in initializer list. All existing elements are either overwritten by the new elements or destroyed.	将初始化列表中的值赋给容器。所有已存在的元素将被新元素覆盖或销毁。
	Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] into the container and https://en.cppreference.com/w/cpp/named_req/CopyAssignable[CopyAssignable^].	要求：`value_type` 需满足对容器而言的 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求和 https://en.cppreference.com/w/cpp/named_req/CopyAssignable[可复制赋值^] 要求。
:644	---	---
	Iterators	迭代器
:648	begin	begin
	```c++ iterator begin() noexcept; const_iterator begin() const noexcept; ```	```c++ iterator begin() noexcept; const_iterator begin() const noexcept; ```
	Returns:;; An iterator referring to the first element of the container, or if the container is empty the past-the-end value for the container.	返回：指向容器第一个元素的迭代器，若容器为空则返回容器尾后迭代器。
:657	---	---
:659	end	end
	```c++ iterator end() noexcept; const_iterator end() const noexcept; ```	```c++ iterator end() noexcept; const_iterator end() const noexcept; ```
	Returns:;; An iterator which refers to the past-the-end value for the container.	返回：指向容器尾后位置的迭代器。
:668	---	---
:670	cbegin	cbegin
	```c++ const_iterator cbegin() const noexcept; ```	```c++ const_iterator cbegin() const noexcept; ```
	Returns:;; A `const_iterator` referring to the first element of the container, or if the container is empty the past-the-end value for the container.	返回：指向容器第一个元素的 `const_iterator`，若容器为空，则返回容器尾后迭代器。
:678	---	---
:680	cend	cend

	English	Chinese (Simplified Han script)	Actions
	Class Template unordered_set	类模板 unordered_set
	```c++ void erase_return_void(const_iterator position); ```	```c++ void erase_return_void(const_iterator position); ```
	Throws:;; Doesn't throw an exception unless it is thrown by the copy constructor or copy assignment operator of `key_equal` or `hasher`. Notes:;; The exception specifications aren't quite the same as the C++11 standard, as the equality predicate and hash function are swapped using their copy constructors.	抛出：除非 `key_equal` 或 `hasher` 的复制构造函数或复制赋值运算符抛出异常，否则不会抛出异常。说明：由于相等谓词和哈希函数是通过它们的复制构造函数进行交换的，因此异常规范与 C++11 标准并不完全相同。
	clear	清空
	```c++ void clear() noexcept; ```	```c++ void clear() noexcept; ```
	Erases all elements in the container.	擦除容器中的所有元素。
	count	count
	Returns:;; The number of elements with key equivalent to `k`. 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：键与 `k` 等价的元素数量。说明：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时以 `K` 和 `Key` 调用，且 `Pred` 是透明的。这实现了异构查找，从而避免了实例化 `Key` 类型对象的开销。</class>
	Returns:;; A boolean indicating whether or not there is an element with key equal to `key` in the container 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：一个布尔值，指示容器中是否存在键等于 `key` 的元素。说明：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时以 `K` 和 `Key` 调用，且 `Pred` 是透明的。这实现了异构查找，从而避免了实例化 `Key` 类型对象的开销。</class>
	equal_range	equal++_++range
	Returns:;; A range containing all elements with key equivalent to `k`. If the container doesn't contain any such elements, returns `std::make_pair(b.end(), b.end())`. Notes:;; The `template<class K>` 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：包含所有键与 `k` 等价的元素的范围。若容器中不包含任何此类元素，则返回 `std::make_pair(b.end(), b.end())`。说明：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时以 `K` 和 `Key` 调用，且 `Pred` 是透明的。这实现了异构查找，从而避免了实例化 `Key` 类型对象的开销。</class>
	```c++ local_iterator begin(size_type n); const_local_iterator begin(size_type n) const; ```	```c++ local_iterator begin(size_type n); const_local_iterator begin(size_type n) const; ```
	operator	operator
	```c++ template<class Key, class Hash, class Pred, class Alloc> bool operator!=(const unordered_set<Key, Hash, Pred, Alloc>& x, const unordered_set<Key, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" hash,="" pred,="" alloc=""> bool operator!=(const unordered_set<key, hash,="" pred,="" alloc="">& x, const unordered_set<key, hash,="" pred,="" alloc="">& y); ```</key,></key,></class>
	Return `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).	如果 `x.size() == y.size()` 且对于 `x` 中的每个元素，在 `y` 中均存在一个具有相同键且值相等（使用 `operator==` 比较值类型）的元素，则返回 `false`。
	Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] into the container and https://en.cppreference.com/w/cpp/named_req/CopyAssignable[CopyAssignable^].	要求：`value_type` 需满足对容器而言的 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求和 https://en.cppreference.com/w/cpp/named_req/CopyAssignable[可复制赋值^] 要求。
	Iterators	迭代器
	:idprefix: unordered_set_	:idprefix: unordered_set_
	`boost::unordered_set` — An unordered associative container that stores unique values.	`boost::unordered++_++set` — 一种用于存储唯一值的无序关联容器。
	Synopsis	概要
	Description	描述
	Template Parameters	模板参数
	_Key_	_键_
	`Key` must be https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^] from the container (i.e. `allocator_traits` can destroy it).	`Key` 必须可以从容器中 https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^]（即 `allocator_traits` 能够销毁它）。
	_Hash_	_Hash_
	A unary function object type that acts a hash function for a `Key`. It takes a single argument of type `Key` and returns a value of type `std::size_t`.	一个一元函数对象类型，用作 `Key` 的哈希函数。它接受一个 `Key` 类型的参数并返回 `std::size_t` 类型的值。
	_Pred_	_Pred_
	```c++ iterator begin() noexcept; const_iterator begin() const noexcept; ```	```c++ iterator begin() noexcept; const_iterator begin() const noexcept; ```
	Returns:;; An iterator referring to the first element of the container, or if the container is empty the past-the-end value for the container.	返回：指向容器第一个元素的迭代器，若容器为空则返回容器尾后迭代器。
	```c++ iterator end() noexcept; const_iterator end() const noexcept; ```	```c++ iterator end() noexcept; const_iterator end() const noexcept; ```

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