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`BOOST_UNORDERED_ENABLE_STATS`
`BOOST_++_++UNORDERED_++_++ENABLE_++_++STATS`
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Configuration Macros
Configuration Macros配置宏
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---
---若 link:../../../../../container_hash/doc/html/hash.html#ref_hash_is_avalanchinghash[`hash++_++is++_++avalanching`]`++<++Hash++>++::value` 为 `true` ，则直接使用哈希函数；否则，会添加一个位混合后处理阶段以提高哈希质量，但会牺牲额外的计算成本。
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If `link:../../../../../container_hash/doc/html/hash.html#ref_hash_is_avalanchinghash[hash_is_avalanching]<Hash>::value` is `true`, the hash function is used as-is; otherwise, a bit-mixing post-processing stage is added to increase the quality of hashing at the expense of extra computational cost.
If `若 link:../../../../../container_hash/doc/html/hash.html#ref_hash_is_avalanchinghash[`hash_is_avalanching]<Hash>++_++is++_++avalanching`]`++&lt;++Hash++&gt;++::value` is为 `true`, the hash function is used as-is; otherwise, a bit-mixing post-processing stage is added to increase the quality of hashing at the expense of extra computational cost. ，则直接使用哈希函数；否则，会添加一个位混合后处理阶段以提高哈希质量，但会牺牲额外的计算成本。
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The size of the bucket array can be automatically increased by a call to `insert`/`emplace`, or as a result of calling `rehash`/`reserve`. The _load factor_ of the container (number of elements divided by number of buckets) is never greater than `max_load_factor()`, except possibly for small sizes where the implementation may decide to allow for higher loads.
The size of the bucket array can be automatically increased by a call to桶数组的大小可通过调用 `insert`/ / `emplace`, or as a result of calling 自动增加，也可通过调用 `rehash`/ / `reserve`. The _load factor_ of the container (number of elements divided by number of buckets) is never greater than `max_load_factor()`, except possibly for small sizes where the implementation may decide to allow for higher loads. 来调整。容器的__负载因子__（元素数量与桶数量的比值）始终不会超过 `max++_++load++_++factor()` ，但在小规模数据情况下，实现可能允许更高的负载因子。
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The elements of the container are held into an internal _bucket array_. An element is inserted into a bucket determined by its hash code, but if the bucket is already occupied (a _collision_), an available one in the vicinity of the original position is used.
The elements of the container are held into an internal _bucket array_. An element is inserted into a bucket determined by its hash code, but if the bucket is already occupied (a _collision_), an available one in the vicinity of the original position is used.容器的元素存储在内部的__桶数组__中。元素根据其哈希码被插入到对应的桶中，但如果该桶已被占用（即发生__冲突__），则会使用原始位置附近可用的桶。
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Allocators using https://en.cppreference.com/w/cpp/named_req/Allocator#Fancy_pointers[fancy pointers] are supported.
Allocators using支持使用 https://en.cppreference.com/w/cpp/named_req/Allocator#Fancy_pointers[fancy pointers] are supported.花式指针^] 的分配器。
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An allocator whose value type is the same as the container's value type.
An allocator whose value type is the same as the container's value type.一个分配器，其值类型与容器的值类型相同。
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_Allocator_
_Allocator_
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A binary function object that induces an equivalence relation on values of type `Key`. It takes two arguments of type `Key` and returns a value of type `bool`.
A binary function object that induces an equivalence relation on values of type `Key`. It takes two arguments of type `Key` and returns a value of type一个二元函数对象，在 `Key` 类型的值上诱导出等价关系。它接受两个 `Key` 类型的参数并返回 `bool`. 类型的值。
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_Pred_
_Pred_
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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`.
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。
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_Hash_
_Hash_
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_T_
_T_
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`std::pair<const Key, T>` must be https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] into the container from any `std::pair` object convertible to it, and it also must be https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^] from the container.
`std::pair<const Key, T>` must bekey,="" t="">` 必须能从任何可转换为它的 `std::pair` 对象满足对容器的 https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] into the container from any `std::pair` object convertible to it, and it also must be可原位构造^] 要求，并且还必须满足对容器的 https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^] from the container.可擦除^] 要求。</const>
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_Key_
_Key键_
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*Template Parameters*
*Template Parameters模板参数*
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Description
Description描述
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---
---
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Synopsis
Synopsis概要
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