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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).
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()，且对于 x 中的每个元素，y 中均存在一个具有相同键、值相等（使用 operator== 比较值类型）的元素，则返回 false。
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```c++ template<class Key, class Hash, class Pred, class Alloc> bool operator!=(const concurrent_flat_set<Key, Hash, Pred, Alloc>& x, const concurrent_flat_set<Key, Hash, Pred, Alloc>& y); ```
```c++ template<class Kkey,="" class Hash, class Pred, class A="" hash,="" pred,="" alloc=""> bool operator!=(const concurrent_flat_set<Kkey, Hhash, Pred, Alloc>&="" pred,="" alloc="">&amp; x, const concurrent_flat_set<Kkey, Hhash, Pred, Alloc>& y); ```="" pred,="" alloc="">&amp; y); ```</key,></key,></class>
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operator!
operator!
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---
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:1535
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Concurrency:;; Blocking on `x` and `y`. Notes:;; Behavior is undefined if the two tables don't have equivalent equality predicates.
Concurrency:;; Blocking on `x` and `y`. Notes:;; Behavior is undefined if the two tables don't have equivalent equality predicates.并发：;; 对`x`和`y`进行阻塞。
备注：;; 若两个哈希表的相等判断谓词不一致，行为未定义。
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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).
Returns `true` if `若 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).，且对于 x 中的每个元素，y 中均存在一个具有相同键、值相等（使用 operator== 比较值类型）的元素，则返回 true。
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```c++ template<class Key, class Hash, class Pred, class Alloc> bool operator==(const concurrent_flat_set<Key, Hash, Pred, Alloc>& x, const concurrent_flat_set<Key, Hash, Pred, Alloc>& y); ```
```c++ template<class Kkey,="" class Hash, class Pred, class A="" hash,="" pred,="" alloc=""> bool operator==(const concurrent_flat_set<Kkey, Hhash, Pred, Alloc>&="" pred,="" alloc="">&amp; x, const concurrent_flat_set<Kkey, Hhash, Pred, Alloc>& y); ```="" pred,="" alloc="">&amp; y); ```</key,></key,></class>
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operator
operator
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Equality Comparisons
Equality Comparisons相等性比较
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__iter-value-type__
__iter-value-type__
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A `size_­type` parameter type in a deduction guide refers to the `size_­type` member type of the container type deduced by the deduction guide. Its default value coincides with the default value of the constructor selected.
A推导指引中的 `size_­++_++type` parameter type in a deduction guide refers to the参数类型，指向由该推导指引所推导容器类型的 `size_­++_++type` member type of the container type deduced by the deduction guide. Its default value coincides with the default value of the constructor selected.成员类型。其默认值与所选构造函数的默认值一致。
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- It has an `InputIterator` template parameter and a type that does not qualify as an input iterator is deduced for that parameter. - It has an `Allocator` template parameter and a type that does not qualify as an allocator is deduced for that parameter. - It has a `Hash` template parameter and an integral type or a type that qualifies as an allocator is deduced for that parameter. - It has a `Pred` template parameter and a type that qualifies as an allocator is deduced for that parameter.
- It has an该推导指引包含 `InputIterator` template parameter and a type that does not qualify as an input iterator is deduced for that parameter. - It has an `Allocator` template parameter and a type that does not qualify as an allocator is deduced for that parameter. - It has a `Hash` template parameter and an integral type or a type that qualifies as an allocator is deduced for that parameter. - It has a `Pred` template parameter and a type that qualifies as an allocator is deduced for that parameter.模板参数，且为此参数推导出的类型不符合输入迭代器的要求。 - 该推导指引包含 `Allocator` 模板参数，且为该参数推导出的类型不符合分配器要求。 - 该推导指引包含 `Hash` 模板参数，且为该参数推导出的类型为整型或符合分配器要求。 - 该推导指引包含 `Pred` 模板参数，且为该参数推导出的类型符合分配器要求。
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A deduction guide will not participate in overload resolution if any of the following are true:
A deduction guide will not participate in overload resolution if any of the following are true:如果以下任何一条件为真，则推导指引将不参与重载决议：
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Deduction Guides
Deduction Guides推导指引
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---
---
:1498
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Effects:;; Sets to zero the internal statistics kept by the table. Notes:;; Only available if xref:reference/stats.adoc#stats[statistics calculation] is xref:concurrent_flat_set_boost_unordered_enable_stats[enabled].
Effects:;; Sets to zero the internal statistics kept by the table. Notes:;; Only available if效果：;; 将哈希表内部统计数据置零。
备注：;; 仅当 xref:reference/stats.adoc#stats[statistics calculation] is统计计算] 被 xref:concurrent_flat_set_boost_unordered_enable_stats[enabled].启用] 时，本接口方可使用。
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```c++ void reset_stats() noexcept; ```
```c++ void reset_stats() noexcept; ```
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reset_stats
reset_stats
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---
---
:1487
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Returns:;; A statistical description of the insertion and lookup operations performed by the table so far. Notes:;; Only available if xref:reference/stats.adoc#stats[statistics calculation] is xref:concurrent_flat_set_boost_unordered_enable_stats[enabled].
Returns:;; A statistical description of the insertion and lookup operations performed by the table so far. Notes:;; Only available if返回值：;; 该哈希表迄今为止执行的插入与查找操作的统计信息。
备注：;; 仅当 xref:reference/stats.adoc#stats[statistics calculation] is统计计算] 被 xref:concurrent_flat_set_boost_unordered_enable_stats[enabled].启用] 时，本接口方可使用。
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