Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Unordered Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Constructs an empty container using `hasher()` as the hash function, …

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Key	English	Chinese (Simplified Han script)
:342	---	---
	An iterator with the same value type, difference type and pointer and reference type as iterator.	一种迭代器，其值类型、差值类型以及指针和引用类型均与 iterator 相同。
	A `local_iterator` object can be used to iterate through a single bucket.	`local_iterator` 对象可用于遍历单个桶内的元素。
:353	---	---
	A constant iterator with the same value type, difference type and pointer and reference type as const_iterator.	一种常量迭代器，其值类型、差值类型以及指针和引用类型均与 const_iterator 相同。
	A const_local_iterator object can be used to iterate through a single bucket.	`const_local_iterator` 对象可用于遍历单个桶。
:364	---	---
	A class for holding extracted container elements, modelling https://en.cppreference.com/w/cpp/container/node_handle[NodeHandle].	一个用于存放被提取容器元素的类，符合 https://en.cppreference.com/w/cpp/container/node_handle[NodeHandle] 模型。
:374	---	---
	A specialization of an internal class template:	一个内部类模板的特化：
	with `Iterator` = `iterator` and `NodeType` = `node_type`.	其中 `Iterator` = `iterator`，`NodeType` = `node_type`。
:396	---	---
	Constructors	构造函数
	Default Constructor	默认构造函数
	```c++ unordered_map(); ```	```c++ unordered_map(); ```
	Constructs an empty container using `hasher()` as the hash function, `key_equal()` as the key equality predicate, `allocator_type()` as the allocator and a maximum load factor of `1.0`.	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，以及最大负载因子 `1.0` 构造一个空容器。
:410	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：如果使用默认值，则 `hasher`、`key_equal` 和 `allocator_type` 需要满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^]。
:413	---	---
	Bucket Count Constructor	桶数构造函数
	```c++ explicit unordered_map(size_type n, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()); ```	```c++ explicit unordered_map(size_type n, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()); ```
	Constructs an empty container with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate, `a` as the allocator and a maximum load factor of `1.0`.	构造一个至少包含 `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，以及最大负载因子 `1.0`。
:428	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：如果使用默认值，则 `hasher`、`key_equal` 和 `allocator_type` 需要满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^]。
:431	---	---
	Iterator Range Constructor	迭代器范围构造函数
	Constructs an empty container with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate, `a` as the allocator and a maximum load factor of `1.0` and inserts the elements from `[f, l)` into it.	构造一个至少包含 `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，以及最大负载因子 `1.0`，并将 `[f, l)` 范围内的元素插入其中。
:447	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^].	要求：如果使用默认值，则 `hasher`、`key_equal` 和 `allocator_type` 需要满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^]。
:449	---	---
	Copy Constructor	复制构造函数
	```c++ unordered_map(unordered_map const& other); ```	```c++ unordered_map(unordered_map const& other); ```
	The copy constructor. Copies the contained elements, hash function, predicate, maximum load factor and allocator.	拷贝构造函数。拷贝所包含的元素、哈希函数、谓词、最大负载因子和分配器。
	If `Allocator::select_on_container_copy_construction` exists and has the right signature, the allocator will be constructed from its result.	如果 `Allocator::select_on_container_copy_construction` 存在且具有正确的签名，则分配器将根据其结果进行构造。

	English	Chinese (Simplified Han script)	Actions
	```c++ float max_load_factor() const noexcept; ```	```c++ float max_load_factor() const noexcept; ```
	Returns:;; Returns the current maximum load factor.	返回：;; 返回当前的最大负载因子。
	rehash	重哈希
	```c++ void rehash(size_type n); ```	```c++ void rehash(size_type n); ```
	Changes the number of buckets so that there are at least `n` buckets, and so that the load factor is less than or equal to the maximum load factor. When applicable, this will either grow or shrink the `bucket_count()` associated with the container.	改变桶的数量，使得至少包含 `n` 个桶，并且使得负载因子小于或等于最大负载因子。在适用的情况下，这将增大或缩小与容器相关联的 `bucket_count()`。
	When `size() == 0`, `rehash(0)` will deallocate the underlying buckets array.	当 `size() == 0` 时，`rehash(0)` 将释放底层桶数组的内存。
	reserve	保留
	operator	operator
	Return `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).	如果 `x.size() == y.size()` 并且对于 `x` 中的每个元素，在 `y` 中都有一个具有相同键且值相等的元素（使用 `operator==` 比较值类型），则返回 `true`。
	Constructs an empty container with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate, `a` as the allocator and a maximum load factor of `1.0` and inserts the elements from `il` into it.	构造一个至少包含 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，以及最大负载因子 1.0，并将 il 中的元素插入其中。
	Bucket Count Constructor with Hasher and Allocator	带哈希函数和分配器的桶数构造函数
	```c++ unordered_map(size_type n, hasher const& hf, allocator_type const& a); ```	```c++ unordered_map(size_type n, hasher const& hf, allocator_type const& a); ```
	An allocator whose value type is the same as the container's value type.	一种分配器，其值类型与容器的值类型相同。
	Allocators using https://en.cppreference.com/w/cpp/named_req/Allocator#Fancy_pointers[fancy pointers] are supported.	支持使https://en.cppreference.com/w/cpp/named_req/Allocator#Fancy_pointers[异形指针] 的分配器。
	A const_local_iterator object can be used to iterate through a single bucket.	`const_local_iterator` 对象可用于遍历单个桶。
	Constructs an empty container using `hasher()` as the hash function, `key_equal()` as the key equality predicate, `allocator_type()` as the allocator and a maximum load factor of `1.0`.	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，以及最大负载因子 `1.0` 构造一个空容器。
	Constructs an empty container with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate, `a` as the allocator and a maximum load factor of `1.0`.	构造一个至少包含 `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，以及最大负载因子 `1.0`。
	Iterator Range Constructor	迭代器范围构造函数
	Constructs an empty container with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate, `a` as the allocator and a maximum load factor of `1.0` and inserts the elements from `[f, l)` into it.	构造一个至少包含 `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，以及最大负载因子 `1.0`，并将 `[f, l)` 范围内的元素插入其中。
	Copy Constructor	复制构造函数
	If `Allocator::select_on_container_copy_construction` exists and has the right signature, the allocator will be constructed from its result.	如果 `Allocator::select_on_container_copy_construction` 存在且具有正确的签名，则分配器将根据其结果进行构造。
	Move Constructor	移动构造函数
	```c++ unordered_map(unordered_map&& other); ```	```c++ unordered_map(unordered_map&& other); ```
	The move constructor.	移动构造函数。
	Notes:;; This is implemented using Boost.Move. Requires:;; `value_type` is move-constructible.	注意：此函数使用 Boost.Move 实现。要求：`value_type` 可移动构造。
	```c++ template<class InputIterator> unordered_map(InputIterator f, InputIterator l, const allocator_type& a); ```	```c++ template<class inputiterator=""> unordered_map(InputIterator f, InputIterator l, const allocator_type& a); ```</class>
	Constructs an empty container using `a` as the allocator, with the default hash function and key equality predicate and a maximum load factor of `1.0` and inserts the elements from `[f, l)` into it.	使用 `a` 作为分配器，以默认哈希函数、默认键相等谓词和最大负载因子 `1.0` 构造一个空容器，并将 `[f, l)` 范围内的元素插入其中。
	Copy Constructor with Allocator	带分配器的复制构造函数
	```c++ unordered_map(unordered_map const& other, Allocator const& a); ```	```c++ unordered_map(unordered_map const& other, Allocator const& a); ```
	```c++ unordered_map(unordered_map&& other, Allocator const& a); ```	```c++ unordered_map(unordered_map&& other, Allocator const& a); ```

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Chinese (Simplified Han script) 138 characters editedCurrent translationState: Translated

06/05/2026

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Chinese (Simplified Han script) 185 characters editedPrevious translationState: Needs editing (Needs rewriting)

06/05/2026

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