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Constructs an empty table using `a` as the allocator, with the default hash function and key equality predicate and inserts the elements from `[f, l)` into it.
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:492
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;; 若使用默认值，则 `hasher` 、 `key++_++equal` 和 `allocator++_++type` 需满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造] 要求。
:494
---
---
Copy Constructor
复制构造函数
```c++ concurrent_flat_map(concurrent_flat_map const& other); ```
```c++ concurrent_flat_map(concurrent_flat_map const& other); ```
The copy constructor. Copies the contained elements, hash function, predicate and allocator.
拷贝构造函数。复制容器内的元素、哈希函数、谓词以及分配器。
If `Allocator::select_on_container_copy_construction` exists and has the right signature, the allocator will be constructed from its result.
若Allocator::select_on_container_copy_construction存在且签名正确，则分配器将根据其返回值构造。
Requires:;; `value_type` is copy constructible Concurrency:;; Blocking on `other`.
要求：value_type 支持复制构造。 并发特性：阻塞于 other
:509
---
---
Move Constructor
移动构造函数
```c++ concurrent_flat_map(concurrent_flat_map&& other); ```
```c++ concurrent_flat_map(concurrent_flat_map&& other); ```
The move constructor. The internal bucket array of `other` is transferred directly to the new table. The hash function, predicate and allocator are moved-constructed from `other`. If statistics are xref:concurrent_flat_map_boost_unordered_enable_stats[enabled], transfers the internal statistical information from `other` and calls `other.reset_stats()`.
移动构造函数。other 的内部桶数组会直接转移到新表中。哈希函数、谓词和分配器均从 other 移动构造而来。如果启用了 xref:concurrent_flat_map_boost_unordered_enable_stats [统计功能]，则从 other 转移内部统计信息，并调用 other.reset_stats()。
:522
Concurrency:;; Blocking on `other`.
并发特性：阻塞于 other
:524
---
---
Iterator Range Constructor with Allocator
带分配器的迭代器范围构造函数
```c++ template<class InputIterator> concurrent_flat_map(InputIterator f, InputIterator l, const allocator_type& a); ```
```c++ template<class inputiterator=""> concurrent_flat_map(InputIterator f, InputIterator l, const allocator_type&amp; a); ```</class>
Constructs an empty table using `a` as the allocator, with the default hash function and key equality predicate and inserts the elements from `[f, l)` into it.
以a作为分配器，使用默认哈希函数与键相等谓词构造空表，并将[f, l)范围内的元素插入其中。
:535
Requires:;; `hasher`, `key_equal` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].
要求：hasher、key_equal 必须满足https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[默认可构造]要求。
:537
---
---
Allocator Constructor
分配器构造函数
```c++ explicit concurrent_flat_map(Allocator const& a); ```
```c++ explicit concurrent_flat_map(Allocator const&amp; a); ```
Constructs an empty table, using allocator `a`.
使用分配器a构造一个空表。
:546
---
---
Copy Constructor with Allocator
带分配器的复制构造函数
```c++ concurrent_flat_map(concurrent_flat_map const& other, Allocator const& a); ```
```c++ concurrent_flat_map(concurrent_flat_map const&amp; other, Allocator const&amp; a); ```
Constructs a table, copying ``other``'s contained elements, hash function, and predicate, but using allocator `a`.
构造一个表，复制other的容器元素、哈希函数和谓词，但使用分配器a。
:556
Concurrency:;; Blocking on `other`.
并发特性：阻塞于 other
:558
---
---
Move Constructor with Allocator
带分配器的移动构造函数
```c++ concurrent_flat_map(concurrent_flat_map&& other, Allocator const& a); ```
```c++ concurrent_flat_map(concurrent_flat_map&amp;&amp; other, Allocator const&amp; a); ```
If `a == other.get_allocator()`, the elements of `other` are transferred directly to the new table; otherwise, elements are moved-constructed from those of `other`. The hash function and predicate are moved-constructed from `other`, and the allocator is copy-constructed from `a`. If statistics are xref:concurrent_flat_map_boost_unordered_enable_stats[enabled], transfers the internal statistical information from `other` iff `a == other.get_allocator()`, and always calls `other.reset_stats()`.
若a == other.get_allocator()，则other的元素会直接转移到新表中；否则，元素从other移动构造而来。
哈希函数与谓词从other移动构造，分配器从a拷贝构造。
如果启用了 xref:concurrent_flat_map_boost_unordered_enable_stats [统计功能]：
当且仅当a == other.get_allocator()时，从other转移内部统计信息
始终调用other.reset_stats()
:573
Concurrency:;; Blocking on `other`.
并发特性：阻塞于 other
English Chinese (Simplified Han script) Actions
Default Constructor
默认构造函数
```c++ concurrent_flat_map(); ```
```c++ concurrent_flat_map(); ```
Bucket Count Constructor
桶数构造函数
```c++ explicit concurrent_flat_map(size_type n, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()); ```
```c++ explicit concurrent_flat_map(size_type n, const hasher&amp; hf = hasher(), const key_equal&amp; eql = key_equal(), const allocator_type&amp; a = allocator_type()); ```
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `eql` as the 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、eql作为键相等谓词、a作为分配器。
Iterator Range Constructor
迭代器范围构造函数
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate and `a` as the allocator, 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` 作为键相等性谓词、 `a` 作为分配器，并将 `[f, l)` 范围内的元素插入其中。
Copy Constructor
复制构造函数
```c++ concurrent_flat_map(concurrent_flat_map const& other); ```
```c++ concurrent_flat_map(concurrent_flat_map const&amp; other); ```
The copy constructor. Copies the contained elements, hash function, predicate and allocator.
拷贝构造函数。复制容器内的元素、哈希函数、谓词以及分配器。
If `Allocator::select_on_container_copy_construction` exists and has the right signature, the allocator will be constructed from its result.
若Allocator::select_on_container_copy_construction存在且签名正确，则分配器将根据其返回值构造。
Move Constructor
移动构造函数
```c++ concurrent_flat_map(concurrent_flat_map&& other); ```
```c++ concurrent_flat_map(concurrent_flat_map&amp;&amp; other); ```
Iterator Range Constructor with Allocator
带分配器的迭代器范围构造函数
```c++ template<class InputIterator> concurrent_flat_map(InputIterator f, InputIterator l, const allocator_type& a); ```
```c++ template<class inputiterator=""> concurrent_flat_map(InputIterator f, InputIterator l, const allocator_type&amp; a); ```</class>
Constructs an empty table using `a` as the allocator, with the default hash function and key equality predicate and inserts the elements from `[f, l)` into it.
以a作为分配器，使用默认哈希函数与键相等谓词构造空表，并将[f, l)范围内的元素插入其中。
Allocator Constructor
分配器构造函数
```c++ explicit concurrent_flat_map(Allocator const& a); ```
```c++ explicit concurrent_flat_map(Allocator const&amp; a); ```
Constructs an empty table, using allocator `a`.
使用分配器a构造一个空表。
Copy Constructor with Allocator
带分配器的复制构造函数
```c++ concurrent_flat_map(concurrent_flat_map const& other, Allocator const& a); ```
```c++ concurrent_flat_map(concurrent_flat_map const&amp; other, Allocator const&amp; a); ```
Constructs a table, copying ``other``'s contained elements, hash function, and predicate, but using allocator `a`.
构造一个表，复制other的容器元素、哈希函数和谓词，但使用分配器a。
If `a == other.get_allocator()`, the elements of `other` are transferred directly to the new table; otherwise, elements are moved-constructed from those of `other`. The hash function and predicate are moved-constructed from `other`, and the allocator is copy-constructed from `a`. If statistics are xref:concurrent_flat_map_boost_unordered_enable_stats[enabled], transfers the internal statistical information from `other` iff `a == other.get_allocator()`, and always calls `other.reset_stats()`.
若a == other.get_allocator()，则other的元素会直接转移到新表中；否则，元素从other移动构造而来。
哈希函数与谓词从other移动构造，分配器从a拷贝构造。
如果启用了 xref:concurrent_flat_map_boost_unordered_enable_stats [统计功能]：
当且仅当a == other.get_allocator()时，从other转移内部统计信息
始终调用other.reset_stats()
```c++ concurrent_flat_map(unordered_flat_map<Key, T, Hash, Pred, Allocator>&& other); ```
```c++ concurrent_flat_map(unordered_flat_map<key, t,="" hash,="" pred,="" allocator="">&amp;&amp; other); ```</key,>
Move construction from a xref:#unordered_flat_map[`unordered_flat_map`]. The internal bucket array of `other` is transferred directly to the new container. The hash function, predicate and allocator are moved-constructed from `other`. If statistics are xref:concurrent_flat_map_boost_unordered_enable_stats[enabled], transfers the internal statistical information from `other` and calls `other.reset_stats()`.
从 xref:#unordered_flat_map [unordered_flat_map] 进行移动构造。other的内部桶数组会直接转移到新容器中。哈希函数、谓词和分配器均从other移动构造而来。如果启用了 xref:concurrent_flat_map_boost_unordered_enable_stats [统计功能]，则从other转移内部统计信息，并调用other.reset_stats()。
Initializer List Constructor
初始化列表构造函数
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate and `a`, 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` 作为键相等性谓词、 `a` 作为分配器，并 `il` 中的元素插入其中。
Bucket Count Constructor with Allocator
带分配器的桶数构造函数
```c++ concurrent_flat_map(size_type n, allocator_type const& a); ```
```c++ concurrent_flat_map(size_type n, allocator_type const&amp; a); ```
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, the default hash function and 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、默认的键相等谓词，并以 a 作为分配器。

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Translation uploaded
Constructs an empty table using `a` as the allocator, with the default hash function and key equality predicate and inserts the elements from `[f, l)` into it.
Constructs an empty table using `a` as the allocator, with the default hash function and key equality predicate and inserts the elements from `[f, l)` into it.以a作为分配器，使用默认哈希函数与键相等谓词构造空表，并将[f, l)范围内的元素插入其中。
06/05/2026
User avatar admin

String added in the repository
Constructs an empty table using `a` as the allocator, with the default hash function and key equality predicate and inserts the elements from `[f, l)` into it.
Constructs an empty table using `a` as the allocator, with the default hash function and key equality predicate and inserts the elements from `[f, l)` 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
53779
Source string location
:532
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 82