Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Flat Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Returns:;; Returns the table's maximum load factor.

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Key	English	Chinese (Simplified Han script)
	```c++ bool contains(const key_type& k) const; template<class K> bool contains(const K& k) const; ```	```c++ bool contains(const key_type& k) const; template<class k=""> bool contains(const K& k) const; ```</class>
	Returns:;; A boolean indicating whether or not there is an element with key equal to `k` in the table. 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. + + In the presence of concurrent insertion operations, the value returned may not accurately reflect the true state of the table right after execution.	返回值：布尔值，表示容器中是否存在键等于 `k` 的元素。说明：仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为有效成员类型别名时，`template<class k="">` 重载版本才参与重载决议。库假定哈希函数可同时作用于 `K` 类型与键类型，且相等谓词是透明的，从而支持异构查找，避免实例化键类型带来的开销。若存在并发插入操作，返回值可能无法精确反映容器执行后的真实状态。</class>
:1581	---	---
	Bucket Interface	桶接口
	bucket_count	bucket_count
	```c++ size_type bucket_count() const noexcept; ```	```c++ size_type bucket_count() const noexcept; ```
	Returns:;; The size of the bucket array.	返回值：桶数组的大小。
:1592	---	---
	Hash Policy	哈希策略
	load_factor	负载因子
	```c++ float load_factor() const noexcept; ```	```c++ float load_factor() const noexcept; ```
	Returns:;; `static_cast<float>(size())/static_cast<float>(bucket_count())`, or `0` if `bucket_count() == 0`.	返回值：`static_cast<float>(size())/static_cast<float>(bucket_count())`；若 `bucket_count() == 0`，则返回 `0`。</float></float>
:1604	---	---
	max_load_factor	max_load_factor（最大负载因子）
	```c++ float max_load_factor() const noexcept; ```	```c++ float max_load_factor() const noexcept; ```
	Returns:;; Returns the table's maximum load factor.	返回值：容器的最大负载因子。
:1615	---	---
	Set max_load_factor	设置最大负载因子
	```c++ void max_load_factor(float z); ```	```c++ void max_load_factor(float z); ```
	Effects:;; Does nothing, as the user is not allowed to change this parameter. Kept for compatibility with `boost::unordered_map`.	效果：无任何操作，用户不允许修改此参数。保留该函数是为了与 `boost::unordered_map` 保持兼容。
:1625	---	---
	max_load	max_load（最大负载）
	```c++ size_type max_load() const noexcept; ```	```c++ size_type max_load() const noexcept; ```
	Returns:;; The maximum number of elements the table can hold without rehashing, assuming that no further elements will be erased. Note:;; After construction, rehash or clearance, the table's maximum load is at least `max_load_factor() * bucket_count()`. This number may decrease on erasure under high-load conditions. + + In the presence of concurrent insertion operations, the value returned may not accurately reflect the true state of the table right after execution.	返回值：容器在不进行重哈希的前提下可容纳的最大元素数量（假定不会再擦除任何元素）。说明：容器在构造、重哈希或清空后，其最大负载量至少为 `max_load_factor() * bucket_count()`。在高负载条件下执行擦除操作时，该数值可能会降低。若存在并发插入操作，返回值可能无法精确反映容器执行后的真实状态。
:1642	---	---
	rehash	重哈希
	```c++ void rehash(size_type n); ```	```c++ void rehash(size_type n); ```
	Changes if necessary the size of the bucket array 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 table.	效果：必要时调整桶数组的大小，使桶数量至少为 `n`，且负载因子小于等于最大负载因子。适用场景下，该操作会增大或缩小容器的桶数量 `bucket_count()`。
	When `size() == 0`, `rehash(0)` will deallocate the underlying buckets array.	当容器大小 `size() == 0` 时，调用 `rehash(0)` 会释放底层的桶数组内存。
:1653	Invalidates pointers and references to elements, and changes the order of elements.	会使指向元素的指针和引用失效，并改变元素的存储顺序。
	Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the table's hash function or comparison function. Concurrency:;; Blocking on `*this`. ---	异常：若抛出异常，函数无任何效果（由容器的哈希函数或比较函数抛出的异常除外）。并发：阻塞当前对象 `*this`。

	English	Chinese (Simplified Han script)	Actions
	Returns:;; The number of elements with key equivalent to `k` (0 or 1). 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. + + In the presence of concurrent insertion operations, the value returned may not accurately reflect the true state of the table right after execution.	返回值：匹配键 `k` 的元素数量（0 或 1）。说明：仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为有效成员类型别名时，`template<class k="">` 重载版本才参与重载决议。库假定哈希函数可同时作用于 `K` 类型与键类型，且相等谓词是透明的，从而支持异构查找，避免实例化键类型带来的开销。若存在并发插入操作，返回值可能无法精确反映容器执行后的真实状态。</class>
	contains	包含
	```c++ bool contains(const key_type& k) const; template<class K> bool contains(const K& k) const; ```	```c++ bool contains(const key_type& k) const; template<class k=""> bool contains(const K& k) const; ```</class>
	```c++ size_type max_load() const noexcept; ```	```c++ size_type max_load() const noexcept; ```
	Equality Comparisons	相等性比较
	operator	operator
	Returns:;; A boolean indicating whether or not there is an element with key equal to `k` in the table. 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. + + In the presence of concurrent insertion operations, the value returned may not accurately reflect the true state of the table right after execution.	返回值：布尔值，表示容器中是否存在键等于 `k` 的元素。说明：仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为有效成员类型别名时，`template<class k="">` 重载版本才参与重载决议。库假定哈希函数可同时作用于 `K` 类型与键类型，且相等谓词是透明的，从而支持异构查找，避免实例化键类型带来的开销。若存在并发插入操作，返回值可能无法精确反映容器执行后的真实状态。</class>
	Bucket Interface	桶接口
	bucket_count	bucket_count
	```c++ size_type bucket_count() const noexcept; ```	```c++ size_type bucket_count() const noexcept; ```
	Returns:;; The size of the bucket array.	返回值：桶数组的大小。
	Hash Policy	哈希策略
	load_factor	负载因子
	```c++ float load_factor() const noexcept; ```	```c++ float load_factor() const noexcept; ```
	Returns:;; `static_cast<float>(size())/static_cast<float>(bucket_count())`, or `0` if `bucket_count() == 0`.	返回值：`static_cast<float>(size())/static_cast<float>(bucket_count())`；若 `bucket_count() == 0`，则返回 `0`。</float></float>
	Returns:;; Returns the table's maximum load factor.	返回值：容器的最大负载因子。
	Set max_load_factor	设置最大负载因子
	```c++ void max_load_factor(float z); ```	```c++ void max_load_factor(float z); ```
	Effects:;; Does nothing, as the user is not allowed to change this parameter. Kept for compatibility with `boost::unordered_map`.	效果：无任何操作，用户不允许修改此参数。保留该函数是为了与 `boost::unordered_map` 保持兼容。
	max_load	max_load（最大负载）
	Returns:;; The maximum number of elements the table can hold without rehashing, assuming that no further elements will be erased. Note:;; After construction, rehash or clearance, the table's maximum load is at least `max_load_factor() * bucket_count()`. This number may decrease on erasure under high-load conditions. + + In the presence of concurrent insertion operations, the value returned may not accurately reflect the true state of the table right after execution.	返回值：容器在不进行重哈希的前提下可容纳的最大元素数量（假定不会再擦除任何元素）。说明：容器在构造、重哈希或清空后，其最大负载量至少为 `max_load_factor() * bucket_count()`。在高负载条件下执行擦除操作时，该数值可能会降低。若存在并发插入操作，返回值可能无法精确反映容器执行后的真实状态。
	Changes if necessary the size of the bucket array 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 table.	效果：必要时调整桶数组的大小，使桶数量至少为 `n`，且负载因子小于等于最大负载因子。适用场景下，该操作会增大或缩小容器的桶数量 `bucket_count()`。
	When `size() == 0`, `rehash(0)` will deallocate the underlying buckets array.	当容器大小 `size() == 0` 时，调用 `rehash(0)` 会释放底层的桶数组内存。
	Throws:;; The function has no effect if an exception is thrown, unless it is thrown by the table's hash function or comparison function. Concurrency:;; Blocking on `*this`. ---	异常：若抛出异常，函数无任何效果（由容器的哈希函数或比较函数抛出的异常除外）。并发：阻塞当前对象 `*this`。
	```c++ void reserve(size_type n); ```	```c++ void reserve(size_type n); ```
	Equivalent to `a.rehash(ceil(n / a.max_load_factor()))`.	等价于 `a.rehash(ceil(n / a.max_load_factor()))`。
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> bool operator==(const concurrent_flat_map<Key, T, Hash, Pred, Alloc>& x, const concurrent_flat_map<Key, T, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> bool operator==(const concurrent_flat_map<key, t,="" hash,="" pred,="" alloc="">& x, const concurrent_flat_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` 中均存在拥有相同键、值相等（使用 `operator==` 比较值类型）的元素，则返回 `true`。
	operator!	operator!
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> bool operator!=(const concurrent_flat_map<Key, T, Hash, Pred, Alloc>& x, const concurrent_flat_map<Key, T, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> bool operator!=(const concurrent_flat_map<key, t,="" hash,="" pred,="" alloc="">& x, const concurrent_flat_map<key, t,="" hash,="" pred,="" alloc="">& y); ```</key,></key,></class>

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