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:965
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:924
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max_size
max_size
```c++ size_type max_size() const noexcept; ```
```c++ size_type max_size() const noexcept; ```
Returns:;; `size()` of the largest possible table.
返回值：;; 哈希表支持的最大元素数量。
:935
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Modifiers
修改器
emplace
原地构造
```c++ template<class... Args> bool emplace(Args&&... args); ```
```c++ template<class... args=""> bool emplace(Args&amp;&amp;... args); ```</class...>
Inserts an object, constructed with the arguments `args`, in the table if and only if there is no element in the table with an equivalent key.
当且仅当哈希表中不存在键等价的元素时，才使用参数 `args` 构造对象并插入到哈希表中。
Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`.
要求：;; `value_type` 可由 `args` 构造。
返回值：;; 若成功插入元素则返回 `true`。
并发特性：;; 会阻塞当前对象 `*this` 的扩容重哈希操作。
:951
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Copy Insert
复制插入
```c++ bool insert(const value_type& obj); ```
```c++ bool insert(const value_type&amp; obj); ```
:958
Inserts `obj` in the table if and only if there is no element in the table with an equivalent key.
当且仅当哈希表中不存在键等价的元素时，才将 `obj` 插入到哈希表中。
:961
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/CopyInsertable[CopyInsertable^]. Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`.
要求：;; `value_type` 支持拷贝插入。
返回值：;; 若成功插入元素则返回 `true`。
并发特性：;; 会阻塞当前对象 `*this` 的扩容重哈希操作。
:965
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Move Insert
移动插入
```c++ bool insert(value_type&& obj); ```
```c++ bool insert(value_type&amp;&amp; obj); ```
:972
Inserts `obj` in the table if and only if there is no element in the table with an equivalent key.
当且仅当哈希表中不存在键等价的元素时，才将 `obj` 插入到哈希表中。
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^]. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`.
要求：;; `value_type` 支持移动插入。
返回值：;; 若成功插入元素则返回 `true`。
并发特性：;; 会阻塞当前对象 `*this` 的扩容重哈希操作。
:979
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Transparent Insert
透明插入
```c++ template<class K> bool insert(K&& k); ```
```c++ template<class k=""> bool insert(K&amp;&amp; k); ```</class>
Inserts an element constructed from `std::forward<K>(k)` in the container if and only if there is no element in the container with an equivalent key.
当且仅当容器中不存在键等价的元素时，才使用 `std::forward<k>(k)` 构造元素并插入到容器中。</k>
Requires:;; `value_type` is https://en.cppreference.com/w/cpp/named_req/EmplaceConstructible[EmplaceConstructible^] from `k`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; This 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.
要求：;; `value_type` 可通过 `k` 原位构造。
返回值：;; 若成功插入元素则返回 `true`。
并发特性：;; 会阻塞当前对象 `*this` 的扩容重哈希操作。
注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为合法成员别名时，该重载版本参与重载决议。库假定 `Hash` 可同时接收 `K` 与 `Key` 类型调用，且 `Pred` 是透明的。这支持异构查找，避免了实例化 `Key` 类型对象的开销。
:994
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Insert Iterator Range
迭代器范围插入
```c++ template<class InputIterator> size_type insert(InputIterator first, InputIterator last); ```
```c++ template<class inputiterator=""> size_type insert(InputIterator first, InputIterator last); ```</class>
:1001
Equivalent to [listing,subs="+macros,+quotes"]
等价于 [listing,subs="+macros,+quotes"]
:1008
Returns:;; The number of elements inserted.
返回值：;; 成功插入的元素数量。
:1010
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:965
06/05/2026
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Key
:965
Flags
safe-html, strict-same
Unit identifier
53425
Source string location
:965
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_node_set_zh_Hans.adoc, string 222