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Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator and default key equality predicate,and inserts the elements from `il` into it.
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Key English Chinese (Simplified Han script) Actions
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator, with the default key equality predicate, 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、 `a` 作为分配器以及默认的键相等性谓词，并将 `[f, l)` 范围内的元素插入其中。
:662
Requires:;; `key_equal` needs to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].
要求;; `key++_++equal` 需满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造] 要求。
:664
---
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initializer_list Constructor with Allocator
带分配器的初始化列表构造函数
```c++ concurrent_flat_map(std::initializer_list<value_type> il, const allocator_type& a); ```
```c++ concurrent_flat_map(std::initializer_list<value_type> il, const allocator_type&amp; a); ```</value_type>
Constructs an empty table using `a` and default hash function and key equality predicate, and inserts the elements from `il` into it.
使用分配器a以及默认哈希函数、键相等谓词构造空表，并将il中的元素插入表中。
:675
Requires:;; `hasher` and `key_equal` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].
要求：`hasher` 和 `key_equal` 需满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^] 要求。
:677
---
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initializer_list Constructor with Bucket Count and Allocator
带桶数和分配器的初始化列表构造函数
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const allocator_type& a); ```
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const allocator_type&amp; a); ```</value_type>
Constructs an empty table with at least `n` buckets, using `a` and default hash function and key equality predicate, and inserts the elements from `il` into it.
构造一个至少包含 n 个桶的空表，使用分配器 a 以及默认哈希函数、键相等谓词，并将 il 中的元素插入表中。
:688
Requires:;; `hasher` and `key_equal` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].
要求：`hasher` 和 `key_equal` 需满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^] 要求。
:690
---
---
initializer_list Constructor with Bucket Count and Hasher and Allocator
带桶数、哈希函数和分配器的初始化列表构造函数
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const hasher& hf, const allocator_type& a); ```
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const hasher&amp; hf, const allocator_type&amp; a); ```</value_type>
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator and default key equality predicate,and inserts the elements from `il` into it.
构造一个至少包含 n 个桶的空表，使用 hf 作为哈希函数、a 作为分配器、默认键相等谓词，并将 il 中的元素插入表中。
:702
Requires:;; `key_equal` needs to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].
要求：key_equal 须满足https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[默认可构造]要求。
:704
---
---
Destructor
析构函数
```c++ ~concurrent_flat_map(); ```
```c++
Note:;; The destructor is applied to every element, and all memory is deallocated
备注：析构函数会作用于所有元素，且所有内存都会被释放。
:715
---
---
Assignment
赋值操作
Copy Assignment
复制赋值
```c++ concurrent_flat_map& operator=(concurrent_flat_map const& other); ```
```c++ concurrent_flat_map&amp; operator=(concurrent_flat_map const&amp; other); ```
The assignment operator. Destroys previously existing elements, copy-assigns the hash function and predicate from `other`, copy-assigns the allocator from `other` if `Alloc::propagate_on_container_copy_assignment` exists and `Alloc::propagate_on_container_copy_assignment::value` is `true`, and finally inserts copies of the elements of `other`.
赋值运算符。销毁原有的所有元素，从other复制赋值哈希函数与谓词；若Alloc::propagate_on_container_copy_assignment存在且其值为true，则从other复制赋值分配器；最终插入other元素的副本。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] Concurrency:;; Blocking on `*this` and `other`.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求。并发：阻塞 `*this` 和 `other`。
:733
---
---
Move Assignment
移动赋值
```c++ concurrent_flat_map& operator=(concurrent_flat_map&& other) noexcept((boost::allocator_traits<Allocator>::is_always_equal::value || boost::allocator_traits<Allocator>::propagate_on_container_move_assignment::value) && std::is_same<pointer, value_type*>::value); ``` The move assignment operator. Destroys previously existing elements, swaps the hash function and predicate from `other`, and move-assigns the allocator from `other` if `Alloc::propagate_on_container_move_assignment` exists and `Alloc::propagate_on_container_move_assignment::value` is `true`. If at this point the allocator is equal to `other.get_allocator()`, the internal bucket array of `other` is transferred directly to `*this`; otherwise, inserts move-constructed copies of the elements of `other`. If statistics are xref:concurrent_flat_map_boost_unordered_enable_stats[enabled], transfers the internal statistical information from `other` iff the final allocator is equal to `other.get_allocator()`, and always calls `other.reset_stats()`.
```c++ concurrent_flat_map&amp; operator=(concurrent_flat_map&amp;&amp; other) noexcept((boost::allocator_traits<allocator>::is_always_equal::value || boost::allocator_traits<allocator>::propagate_on_container_move_assignment::value) &amp;&amp; std::is_same<pointer, value_type*="">::value); ```
移动赋值运算符。销毁当前容器原有的所有元素，交换other的哈希函数与谓词；若Alloc::propagate_on_container_move_assignment存在且其值为true，则从other移动赋值分配器。
若此时分配器与other.get_allocator()相等，则直接转移other的内部桶数组至当前容器；否则，插入other元素的移动构造副本。
如果启用了统计功能：
当且仅当最终分配器与other.get_allocator()相等时，从other转移内部统计信息
始终调用other.reset_stats()</pointer,></allocator></allocator>
Concurrency:;; Blocking on `*this` and `other`.
并发：阻塞于 *this 和 other。
Key English Chinese (Simplified Han script) Actions
```c++ concurrent_flat_map(size_type n, hasher const& hf, allocator_type const& a); ```
```c++ concurrent_flat_map(size_type n, hasher const&amp; hf, allocator_type const&amp; a); ```
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, the default key equality predicate and `a` as the allocator.
构造一个至少包含 n 个桶的空表，使用 hf 作为哈希函数、默认键相等谓词，并以 a 作为分配器。
Postconditions:;; `size() == 0` Requires:;; `key_equal` needs to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].
后置条件：size() == 0
要求：key_equal 必须满足https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[默认可构造]。
Iterator Range Constructor with Bucket Count and Allocator
带桶数和分配器的迭代器范围构造函数
Constructs an empty table with at least `n` buckets, using `a` as the allocator and default hash function and key equality predicate, 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 `a` 作为分配器以及默认的哈希函数和键相等性谓词，并将 `++[++f, l)` 范围内的元素插入其中。
Iterator Range Constructor with Bucket Count and Hasher
带桶数和哈希函数的迭代器范围构造函数
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator, with the default key equality predicate, 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、 `a` 作为分配器以及默认的键相等性谓词，并将 `[f, l)` 范围内的元素插入其中。
initializer_list Constructor with Allocator
带分配器的初始化列表构造函数
```c++ concurrent_flat_map(std::initializer_list<value_type> il, const allocator_type& a); ```
```c++ concurrent_flat_map(std::initializer_list<value_type> il, const allocator_type&amp; a); ```</value_type>
Constructs an empty table using `a` and default hash function and key equality predicate, and inserts the elements from `il` into it.
使用分配器a以及默认哈希函数、键相等谓词构造空表，并将il中的元素插入表中。
initializer_list Constructor with Bucket Count and Allocator
带桶数和分配器的初始化列表构造函数
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const allocator_type& a); ```
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const allocator_type&amp; a); ```</value_type>
Constructs an empty table with at least `n` buckets, using `a` and default hash function and key equality predicate, and inserts the elements from `il` into it.
构造一个至少包含 n 个桶的空表，使用分配器 a 以及默认哈希函数、键相等谓词，并将 il 中的元素插入表中。
initializer_list Constructor with Bucket Count and Hasher and Allocator
带桶数、哈希函数和分配器的初始化列表构造函数
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const hasher& hf, const allocator_type& a); ```
```c++ concurrent_flat_map(std::initializer_list<value_type> il, size_type n, const hasher&amp; hf, const allocator_type&amp; a); ```</value_type>
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator and default key equality predicate,and inserts the elements from `il` into it.
构造一个至少包含 n 个桶的空表，使用 hf 作为哈希函数、a 作为分配器、默认键相等谓词，并将 il 中的元素插入表中。
Destructor
析构函数
```c++ ~concurrent_flat_map(); ```
```c++
Note:;; The destructor is applied to every element, and all memory is deallocated
备注：析构函数会作用于所有元素，且所有内存都会被释放。
Assignment
赋值操作
Copy Assignment
复制赋值
```c++ concurrent_flat_map& operator=(concurrent_flat_map const& other); ```
```c++ concurrent_flat_map&amp; operator=(concurrent_flat_map const&amp; other); ```
The assignment operator. Destroys previously existing elements, copy-assigns the hash function and predicate from `other`, copy-assigns the allocator from `other` if `Alloc::propagate_on_container_copy_assignment` exists and `Alloc::propagate_on_container_copy_assignment::value` is `true`, and finally inserts copies of the elements of `other`.
赋值运算符。销毁原有的所有元素，从other复制赋值哈希函数与谓词；若Alloc::propagate_on_container_copy_assignment存在且其值为true，则从other复制赋值分配器；最终插入other元素的副本。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^] Concurrency:;; Blocking on `*this` and `other`.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求。并发：阻塞 `*this` 和 `other`。
```c++ concurrent_flat_map& operator=(concurrent_flat_map&& other) noexcept((boost::allocator_traits<Allocator>::is_always_equal::value || boost::allocator_traits<Allocator>::propagate_on_container_move_assignment::value) && std::is_same<pointer, value_type*>::value); ``` The move assignment operator. Destroys previously existing elements, swaps the hash function and predicate from `other`, and move-assigns the allocator from `other` if `Alloc::propagate_on_container_move_assignment` exists and `Alloc::propagate_on_container_move_assignment::value` is `true`. If at this point the allocator is equal to `other.get_allocator()`, the internal bucket array of `other` is transferred directly to `*this`; otherwise, inserts move-constructed copies of the elements of `other`. If statistics are xref:concurrent_flat_map_boost_unordered_enable_stats[enabled], transfers the internal statistical information from `other` iff the final allocator is equal to `other.get_allocator()`, and always calls `other.reset_stats()`.
```c++ concurrent_flat_map&amp; operator=(concurrent_flat_map&amp;&amp; other) noexcept((boost::allocator_traits<allocator>::is_always_equal::value || boost::allocator_traits<allocator>::propagate_on_container_move_assignment::value) &amp;&amp; std::is_same<pointer, value_type*="">::value); ```
移动赋值运算符。销毁当前容器原有的所有元素，交换other的哈希函数与谓词；若Alloc::propagate_on_container_move_assignment存在且其值为true，则从other移动赋值分配器。
若此时分配器与other.get_allocator()相等，则直接转移other的内部桶数组至当前容器；否则，插入other元素的移动构造副本。
如果启用了统计功能：
当且仅当最终分配器与other.get_allocator()相等时，从other转移内部统计信息
始终调用other.reset_stats()</pointer,></allocator></allocator>
Concurrency:;; Blocking on `*this` and `other`.
并发：阻塞于 *this 和 other。
Initializer List Assignment
初始化列表赋值
:1006
Equivalent to [listing,subs="+macros,+quotes"]
等效于 [listing,subs="+macros,+quotes"]
:1013
Returns:;; The number of elements inserted.
返回值：成功插入的元素数量。
:1015
---
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Translation uploaded
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator and default key equality predicate,and inserts the elements from `il` into it.
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator and default key equality predicate,and inserts the elements from `il` into it.构造一个至少包含 n 个桶的空表，使用 hf 作为哈希函数、a 作为分配器、默认键相等谓词，并将 il 中的元素插入表中。
06/05/2026
User avatar admin

String added in the repository
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator and default key equality predicate,and inserts the elements from `il` into it.
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `a` as the allocator and default key equality predicate,and inserts the elements from `il` into it.
06/05/2026
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Glossary

English Chinese (Simplified Han script)
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String information

Flags
safe-html, strict-same
Unit identifier
53835
Source string location
:699
String age
06/05/2026
Last updated
06/06/2026
Source string age
06/05/2026
Translation file AsciiDoc file
doc/modules/ROOT/pages/reference/concurrent_flat_map_zh_Hans.adoc, string 138