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Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.
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Key English Chinese (Simplified Han script) Actions
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + A call of the form `insert(x)`, where `x` is equally convertible to both `value_type&&` and `init_type&&`, is not ambiguous and selects the `init_type` overload.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入^] 要求。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +形式为 `insert(x)` 的调用（其中 `x` 可同等转换为 `value_type&&` 和 `init_type&&`）不会产生歧义，并且会选择 `init_type` 重载。
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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>
: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。
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---
---
Insert Initializer List
初始化列表插入
```c++ size_type insert(std::initializer_list<value_type> il); ```
```c++ size_type insert(std::initializer_list<value_type> il); ```</value_type>
:1022
Equivalent to [listing,subs="+macros,+quotes"]
等效于 [listing,subs="+macros,+quotes"]
:1029
Returns:;; The number of elements inserted.
返回值：插入的元素个数。
:1031
---
---
emplace_or_[c]visit
emplace_or_[c]visit
```c++ template<class... Args, class F> bool emplace_or_visit(Args&&... args, F&& f); template<class... Args, class F> bool emplace_or_cvisit(Args&&... args, F&& f); ```
```c++ template<class... args,="" class="" f=""> bool emplace_or_visit(Args&amp;&amp;... args, F&amp;&amp; f); template<class... args,="" class="" f=""> bool emplace_or_cvisit(Args&amp;&amp;... args, F&amp;&amp; f); ```</class...></class...>
Inserts an object, constructed with the arguments `args`, in the table if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a reference to the equivalent element; such reference is const iff `emplace_or_cvisit` is used.
若容器中无等价键的元素，则使用参数 args 构造对象并插入容器；
否则，将等价元素的引用传递给函数 f 并调用 —— 若使用的是 emplace_or_cvisit，则该引用为常量引用。
Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.
要求：`value_type` 可从 `args` 构造。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +该接口仅为展示说明，因为 C++ 不允许在变参参数包之后声明参数 `f`。
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---
---
Copy insert_or_[c]visit
Copy insert_or_[c]visit
```c++ template<class F> bool insert_or_visit(const value_type& obj, F f); template<class F> bool insert_or_cvisit(const value_type& obj, F f); template<class F> bool insert_or_visit(const init_type& obj, F f); template<class F> bool insert_or_cvisit(const init_type& obj, F f); ```
```c++ template<class f=""> bool insert_or_visit(const value_type&amp; obj, F f); template<class f=""> bool insert_or_cvisit(const value_type&amp; obj, F f); template<class f=""> bool insert_or_visit(const init_type&amp; obj, F f); template<class f=""> bool insert_or_cvisit(const init_type&amp; obj, F f); ```</class></class></class></class>
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Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a reference to the equivalent element; such reference is const iff a `*_cvisit` overload is used.
当且仅当容器中不存在等价键的元素时，将对象 obj 插入容器；
否则，将等价元素的引用传入函数 f 并调用 ——若使用的是 *_cvisit 重载版本，该引用为常量引用。
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + In a call of the form `insert_or_[c]visit(obj, f)`, the overloads accepting a `const value_type&` argument participate in overload resolution only if `std::remove_cv<std::remove_reference<decltype(obj)>::type>::type` is `value_type`.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +在形式为 `insert_or_[c]visit(obj, f)` 的调用中，接受 `const value_type&amp;` 参数的重载仅当 `std::remove_cv<std::remove_reference<decltype(obj)>::type&gt;::type` 为 `value_type` 时才参与重载决议。</std::remove_reference<decltype(obj)>
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---
---
Move insert_or_[c]visit
Move insert_or_[c]visit
```c++ template<class F> bool insert_or_visit(value_type&& obj, F f); template<class F> bool insert_or_cvisit(value_type&& obj, F f); template<class F> bool insert_or_visit(init_type&& obj, F f); template<class F> bool insert_or_cvisit(init_type&& obj, F f); ```
```c++ template<class f=""> bool insert_or_visit(value_type&amp;&amp; obj, F f); template<class f=""> bool insert_or_cvisit(value_type&amp;&amp; obj, F f); template<class f=""> bool insert_or_visit(init_type&amp;&amp; obj, F f); template<class f=""> bool insert_or_cvisit(init_type&amp;&amp; obj, F f); ```</class></class></class></class>
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Inserts `obj` in the table if and only if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a reference to the equivalent element; such reference is const iff a `*_cvisit` overload is used.
当且仅当容器中无等价键的元素时，插入对象 obj；
否则，以等价元素的引用调用函数 f ——若使用 *_cvisit 重载版本，该引用为常量引用。
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + In a call of the form `insert_or_[c]visit(obj, f)`, the overloads accepting a `value_type&&` argument participate in overload resolution only if `std::remove_reference<decltype(obj)>::type` is `value_type`.
要求：value_type 满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入] 要求。
返回值：插入成功则返回 true。
并发：在当前对象 *this 执行重哈希期间阻塞。
说明：触发重哈希时，会使指向元素的指针和引用失效。
调用形式为 insert_or_[c]visit(obj, f) 时，仅当 std::remove_reference<decltype(obj)>::type 类型为 value_type，接收 value_type&amp;&amp; 参数的重载函数才会参与重载决议。</decltype(obj)>
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---
---
Insert Iterator Range or Visit
迭代器范围插入或访问
```c++ template<class InputIterator,class F> size_type insert_or_visit(InputIterator first, InputIterator last, F f); template<class InputIterator,class F> size_type insert_or_cvisit(InputIterator first, InputIterator last, F f); ```
```c++ template<class inputiterator,class="" f=""> size_type insert_or_visit(InputIterator first, InputIterator last, F f); template<class inputiterator,class="" f=""> size_type insert_or_cvisit(InputIterator first, InputIterator last, F f); ```</class></class>
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Equivalent to [listing,subs="+macros,+quotes"]
等效于 [listing,subs="+macros,+quotes"]
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Returns:;; The number of elements inserted.
返回值：插入的元素数量。
English Chinese (Simplified Han script) Actions
```c++ template<class ExecutionPolicy, class F> void visit_all(ExecutionPolicy&& policy, F f); template<class ExecutionPolicy, class F> void visit_all(ExecutionPolicy&& policy, F f) const; template<class ExecutionPolicy, class F> void cvisit_all(ExecutionPolicy&& policy, F f) const; ```
```c++ template<class executionpolicy,="" class="" f=""> void visit_all(ExecutionPolicy&amp;&amp; policy, F f); template<class executionpolicy,="" class="" f=""> void visit_all(ExecutionPolicy&amp;&amp; policy, F f) const; template<class executionpolicy,="" class="" f=""> void cvisit_all(ExecutionPolicy&amp;&amp; policy, F f) const; ```</class></class></class>
Invokes `f` with references to each of the elements in the table. Such references are const iff `*this` is const. Execution is parallelized according to the semantics of the execution policy specified.
以表中每个元素的引用调用函数 f。
当且仅当当前容器 *this 为常量（const）时，该引用为常量引用。
执行过程将根据指定的执行策略语义进行并行化。
Throws:;; Depending on the exception handling mechanism of the execution policy used, may call `std::terminate` if an exception is thrown within `f`. Notes:;; Only available in compilers supporting C++17 parallel algorithms. + + These overloads only participate in overload resolution if `std::is_execution_policy_v<std::remove_cvref_t<ExecutionPolicy>>` is `true`. + + Unsequenced execution policies are not allowed.
抛出异常：根据所使用执行策略的异常处理机制，如果 f 内部抛出异常，则可能会调用 std::terminate。
注意：仅在支持 C++17 并行算法的编译器中可用。
仅当 std::is_execution_policy_v<std::remove_cvref_t<executionpolicy>&gt; 为 true 时，这些重载版本才参与重载决议。
不允许使用无序执行策略。</std::remove_cvref_t<executionpolicy>
[c]visit_while
[c]visit_while
Successively invokes `f` with references to each of the elements in the table until `f` returns `false` or all the elements are visited. Such references to the elements are const iff `*this` is const.
依次以表中每个元素的引用调用函数 f，直到 f 返回 false 或遍历完所有元素。
当且仅当当前容器 *this 为常量（const）时，该元素引用为常量引用。
Parallel [c]visit_while
并行 [c]visit_while
```c++ template<class ExecutionPolicy, class F> bool visit_while(ExecutionPolicy&& policy, F f); template<class ExecutionPolicy, class F> bool visit_while(ExecutionPolicy&& policy, F f) const; template<class ExecutionPolicy, class F> bool cvisit_while(ExecutionPolicy&& policy, F f) const; ```
```c++ template<class executionpolicy,="" class="" f=""> bool visit_while(ExecutionPolicy&amp;&amp; policy, F f); template<class executionpolicy,="" class="" f=""> bool visit_while(ExecutionPolicy&amp;&amp; policy, F f) const; template<class executionpolicy,="" class="" f=""> bool cvisit_while(ExecutionPolicy&amp;&amp; policy, F f) const; ```</class></class></class>
Returns:;; `false` iff `f` ever returns `false`. Throws:;; Depending on the exception handling mechanism of the execution policy used, may call `std::terminate` if an exception is thrown within `f`. Notes:;; Only available in compilers supporting C++17 parallel algorithms. + + These overloads only participate in overload resolution if `std::is_execution_policy_v<std::remove_cvref_t<ExecutionPolicy>>` is `true`. + + Unsequenced execution policies are not allowed. + + Parallelization implies that execution does not necessary finish as soon as `f` returns `false`, and as a result `f` may be invoked with further elements for which the return value is also `false`.
返回值：当且仅当 f 曾返回 false 时，整体返回 false。
抛出异常：根据所使用执行策略的异常处理机制，如果 f 内部抛出异常，则可能会调用 std::terminate。
注意：
仅在支持 C++17 并行算法的编译器中可用。
仅当 std::is_execution_policy_v<std::remove_cvref_t<executionpolicy>&gt; 为 true 时，这些重载版本才参与重载决议。
不允许使用无序执行策略。
并行化意味着：即使 f 已返回 false，执行流程也不一定会立即终止；因此，f 可能还会被继续调用以处理后续元素，且这些调用同样可能返回 false。</std::remove_cvref_t<executionpolicy>
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + A call of the form `insert(x)`, where `x` is equally convertible to both `const value_type&` and `const init_type&`, is not ambiguous and selects the `init_type` overload.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +形式为 `insert(x)` 的调用（其中 `x` 可同等转换为 `const value_type&amp;` 和 `const init_type&amp;`）不会产生歧义，并且会选择 `init_type` 重载。
Move Insert
移动插入
```c++ bool insert(value_type&& obj); bool insert(init_type&& obj); ```
```c++ bool insert(value_type&amp;&amp; obj); bool insert(init_type&amp;&amp; obj); ```
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + A call of the form `insert(x)`, where `x` is equally convertible to both `value_type&&` and `init_type&&`, is not ambiguous and selects the `init_type` overload.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入^] 要求。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +形式为 `insert(x)` 的调用（其中 `x` 可同等转换为 `value_type&amp;&amp;` 和 `init_type&amp;&amp;`）不会产生歧义，并且会选择 `init_type` 重载。
```c++ template<class InputIterator> size_type insert(InputIterator first, InputIterator last); ```
```c++ template<class inputiterator=""> size_type insert(InputIterator first, InputIterator last); ```</class>
```c++ template<class... Args, class F> bool emplace_or_visit(Args&&... args, F&& f); template<class... Args, class F> bool emplace_or_cvisit(Args&&... args, F&& f); ```
```c++ template<class... args,="" class="" f=""> bool emplace_or_visit(Args&amp;&amp;... args, F&amp;&amp; f); template<class... args,="" class="" f=""> bool emplace_or_cvisit(Args&amp;&amp;... args, F&amp;&amp; f); ```</class...></class...>
Inserts an object, constructed with the arguments `args`, in the table if there is no element in the table with an equivalent key. Otherwise, invokes `f` with a reference to the equivalent element; such reference is const iff `emplace_or_cvisit` is used.
若容器中无等价键的元素，则使用参数 args 构造对象并插入容器；
否则，将等价元素的引用传递给函数 f 并调用 —— 若使用的是 emplace_or_cvisit，则该引用为常量引用。
Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.
要求：`value_type` 可从 `args` 构造。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +该接口仅为展示说明，因为 C++ 不允许在变参参数包之后声明参数 `f`。
```c++ template<class F> bool insert_or_visit(const value_type& obj, F f); template<class F> bool insert_or_cvisit(const value_type& obj, F f); template<class F> bool insert_or_visit(const init_type& obj, F f); template<class F> bool insert_or_cvisit(const init_type& obj, F f); ```
```c++ template<class f=""> bool insert_or_visit(const value_type&amp; obj, F f); template<class f=""> bool insert_or_cvisit(const value_type&amp; obj, F f); template<class f=""> bool insert_or_visit(const init_type&amp; obj, F f); template<class f=""> bool insert_or_cvisit(const init_type&amp; obj, F f); ```</class></class></class></class>
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + In a call of the form `insert_or_[c]visit(obj, f)`, the overloads accepting a `const value_type&` argument participate in overload resolution only if `std::remove_cv<std::remove_reference<decltype(obj)>::type>::type` is `value_type`.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +在形式为 `insert_or_[c]visit(obj, f)` 的调用中，接受 `const value_type&amp;` 参数的重载仅当 `std::remove_cv<std::remove_reference<decltype(obj)>::type&gt;::type` 为 `value_type` 时才参与重载决议。</std::remove_reference<decltype(obj)>
Move insert_or_[c]visit
Move insert_or_[c]visit
```c++ template<class F> bool insert_or_visit(value_type&& obj, F f); template<class F> bool insert_or_cvisit(value_type&& obj, F f); template<class F> bool insert_or_visit(init_type&& obj, F f); template<class F> bool insert_or_cvisit(init_type&& obj, F f); ```
```c++ template<class f=""> bool insert_or_visit(value_type&amp;&amp; obj, F f); template<class f=""> bool insert_or_cvisit(value_type&amp;&amp; obj, F f); template<class f=""> bool insert_or_visit(init_type&amp;&amp; obj, F f); template<class f=""> bool insert_or_cvisit(init_type&amp;&amp; obj, F f); ```</class></class></class></class>
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + In a call of the form `insert_or_[c]visit(obj, f)`, the overloads accepting a `value_type&&` argument participate in overload resolution only if `std::remove_reference<decltype(obj)>::type` is `value_type`.
要求：value_type 满足 https://en.cppreference.com/w/cpp/named_req/MoveInsertable[可移动插入] 要求。
返回值：插入成功则返回 true。
并发：在当前对象 *this 执行重哈希期间阻塞。
说明：触发重哈希时，会使指向元素的指针和引用失效。
调用形式为 insert_or_[c]visit(obj, f) 时，仅当 std::remove_reference<decltype(obj)>::type 类型为 value_type，接收 value_type&amp;&amp; 参数的重载函数才会参与重载决议。</decltype(obj)>
Insert Iterator Range or Visit
迭代器范围插入或访问
Insert Initializer List or Visit
初始化列表插入或访问
```c++ template<class F> size_type insert_or_visit(std::initializer_list<value_type> il, F f); template<class F> size_type insert_or_cvisit(std::initializer_list<value_type> il, F f); ```
```c++ template<class f=""> size_type insert_or_visit(std::initializer_list<value_type> il, F f); template<class f=""> size_type insert_or_cvisit(std::initializer_list<value_type> il, F f); ```</value_type></class></value_type></class>
Inserts an object, constructed with the arguments `args`, in the table if there is no element in the table with an equivalent key, and then invokes `f1` with a non-const reference to the newly created element. Otherwise, invokes `f2` with a reference to the equivalent element; such reference is const iff `emplace_and_cvisit` is used.
若容器中无等价键的元素，则使用参数args构造对象并插入容器，随后以新创建元素的非常量引用调用f1；
否则，以等价元素的引用调用f2；若使用emplace_and_cvisit，则该引用为常量引用。
Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare parameters `f1` and `f2` after a variadic parameter pack.
要求：`value_type` 可从 `args` 构造。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +该接口仅为展示说明，因为 C++ 不允许在变参参数包之后声明参数 `f1` 和 `f2`。
Copy insert_and_[c]visit
复制 insert_and_[c]visit
```c++ template<class F1, class F2> bool insert_and_visit(const value_type& obj, F1 f1, F2 f2); template<class F1, class F2> bool insert_and_cvisit(const value_type& obj, F1 f1, F2 f2); template<class F1, class F2> bool insert_and_visit(const init_type& obj, F1 f1, F2 f2); template<class F1, class F2> bool insert_and_cvisit(const init_type& obj, F1 f1, F2 f2); ```
```c++ template<class f1,="" class="" f2=""> bool insert_and_visit(const value_type&amp; obj, F1 f1, F2 f2); template<class f1,="" class="" f2=""> bool insert_and_cvisit(const value_type&amp; obj, F1 f1, F2 f2); template<class f1,="" class="" f2=""> bool insert_and_visit(const init_type&amp; obj, F1 f1, F2 f2); template<class f1,="" class="" f2=""> bool insert_and_cvisit(const init_type&amp; obj, F1 f1, F2 f2); ```</class></class></class></class>
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`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + In a call of the form `insert_and_[c]visit(obj, f1, f2)`, the overloads accepting a `const value_type&` argument participate in overload resolution only if `std::remove_cv<std::remove_reference<decltype(obj)>::type>::type` is `value_type`.
要求：`value_type` 需满足 https://en.cppreference.com/w/cpp/named_req/CopyInsertable[可复制插入^] 要求。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +在形式为 `insert_and_[c]visit(obj, f1, f2)` 的调用中，接受 `const value_type&amp;` 参数的重载仅当 `std::remove_cv<std::remove_reference<decltype(obj)>::type&gt;::type` 为 `value_type` 时才参与重载决议。</std::remove_reference<decltype(obj)>
```c++ template<class F1, class F2> bool insert_and_visit(value_type&& obj, F1 f1, F2 f2); template<class F1, class F2> bool insert_and_cvisit(value_type&& obj, F1 f1, F2 f2); template<class F1, class F2> bool insert_and_visit(init_type&& obj, F1 f1, F2 f2); template<class F1, class F2> bool insert_and_cvisit(init_type&& obj, F1 f1, F2 f2); ```
```c++ template<class f1,="" class="" f2=""> bool insert_and_visit(value_type&amp;&amp; obj, F1 f1, F2 f2); template<class f1,="" class="" f2=""> bool insert_and_cvisit(value_type&amp;&amp; obj, F1 f1, F2 f2); template<class f1,="" class="" f2=""> bool insert_and_visit(init_type&amp;&amp; obj, F1 f1, F2 f2); template<class f1,="" class="" f2=""> bool insert_and_cvisit(init_type&amp;&amp; obj, F1 f1, F2 f2); ```</class></class></class></class>

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Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.
Requires:;; 要求：`value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.可从 `args` 构造。返回：若执行了插入则返回 `true`。并发：在 `*this` 的 rehash 操作上阻塞。注意：如果执行了 rehash，则指向元素的指针和引用会失效。+ +该接口仅为展示说明，因为 C++ 不允许在变参参数包之后声明参数 `f`。
06/05/2026
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Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.
Requires:;; `value_type` is constructible from `args`. Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Invalidates pointers and references to elements if a rehashing is issued. + + The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.
06/05/2026
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:1043
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doc/modules/ROOT/pages/reference/concurrent_flat_map_zh_Hans.adoc, string 235