Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Node Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: ```c++ template<class... Args, class F1, class F2> bool try_emplace_and_visit(const key

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```c++ template<class... Args, class F1, class F2> bool try_emplace_and_visit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_cvisit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_visit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_cvisit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class K, class... Args, class F1, class F2> bool try_emplace_and_visit(K&& k, Args&&... args, F1&& f1, F2&& f2); template<class K, class... Args, class F1, class F2> bool try_emplace_and_cvisit(K&& k, Args&&... args, F1&& f1, F2&& f2); ```

Chinese (Simplified Han script)

```c++ template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(const key_type&amp; k, Args&amp;&amp;... args, F1&amp;&amp; f1, F2&amp;&amp; f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(const key_type&amp; k, Args&amp;&amp;... args, F1&amp;&amp; f1, F2&amp;&amp; f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(key_type&amp;&amp; k, Args&amp;&amp;... args, F1&amp;&amp; f1, F2&amp;&amp; f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(key_type&amp;&amp; k, Args&amp;&amp;... args, F1&amp;&amp; f1, F2&amp;&amp; f2); template<class k,="" class...="" args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(K&amp;&amp; k, Args&amp;&amp;... args, F1&amp;&amp; f1, F2&amp;&amp; f2); template<class k,="" class...="" args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(K&amp;&amp; k, Args&amp;&amp;... args, F1&amp;&amp; f1, F2&amp;&amp; f2); ```</class></class></class...></class...></class...></class...>

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Key	English	Chinese (Simplified Han script)
	unlike xref:#concurrent_node_map_emplace[emplace], which simply forwards all arguments to ``value_type``'s constructor.	与 xref:#concurrent_node_map_emplace[emplace] 不同，该函数会直接将所有参数转发给 `value_type` 的构造函数。
	The `template<class K, class\... Args>` 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.	仅当 Hash::is_transparent 与 Pred::is_transparent 为合法的成员类型别名时，template<class k,="" args=""> 这个重载版本才会参与重载决议。库实现假定 Hash 可同时接受 K 类型与 Key 类型作为参数，且 Pred 是透明的。这一特性支持异构查找，从而避免实例化 Key 类型对象带来的性能开销。</class>
:1368	--	--
:1370	---	---
	try_emplace_or_[c]visit	try_emplace_or_[c]visit
	```c++ template<class... Args, class F> bool try_emplace_or_visit(const key_type& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_cvisit(const key_type& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_visit(key_type&& k, Args&&... args, F&& f); template<class... Args, class F> bool try_emplace_or_cvisit(key_type&& k, Args&&... args, F&& f); template<class K, class... Args, class F> bool try_emplace_or_visit(K&& k, Args&&... args, F&& f); template<class K, class... Args, class F> bool try_emplace_or_cvisit(K&& k, Args&&... args, F&& f); ```	```c++ template<class... args,="" class="" f=""> bool try_emplace_or_visit(const key_type& k, Args&&... args, F&& f); template<class... args,="" class="" f=""> bool try_emplace_or_cvisit(const key_type& k, Args&&... args, F&& f); template<class... args,="" class="" f=""> bool try_emplace_or_visit(key_type&& k, Args&&... args, F&& f); template<class... args,="" class="" f=""> bool try_emplace_or_cvisit(key_type&& k, Args&&... args, F&& f); template<class k,="" class...="" args,="" class="" f=""> bool try_emplace_or_visit(K&& k, Args&&... args, F&& f); template<class k,="" class...="" args,="" class="" f=""> bool try_emplace_or_cvisit(K&& k, Args&&... args, F&& f); ```</class></class></class...></class...></class...></class...>
	Inserts an element constructed from `k` and `args` into the table if there is no existing element with key `k` contained within it. Otherwise, invokes `f` with a reference to the equivalent element; such reference is const iff a `*_cvisit` overload is used.	若表中不存在键为`k`的元素，则将由`k`和`args`构造的元素插入表中。否则，以指向等价元素的引用调用`f`；当且仅当使用`*_cvisit`重载版本时，该引用为常量引用。
:1392	Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`. Notes:;; No `value_type` is constructed if there is an element with an equivalent key; otherwise, the construction is of the form: + + -- ```c++	返回值：;; 若执行插入操作则返回 true。并发特性：;; 阻塞对 *this 的重哈希操作。注意：;; 若已存在等价键的元素，则不会构造 value_type；否则，构造方式如下：
:1400	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<Key>(k)), std::forward_as_tuple(std::forward<Args>(args)...))	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<key>(k)), std::forward_as_tuple(std::forward<args>(args)...))</args></key>
:1405	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<K>(k)), std::forward_as_tuple(std::forward<Args>(args)...)) ```	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<k>(k)), std::forward_as_tuple(std::forward<args>(args)...)) ```</args></k>
	The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.	该接口仅为说明性用法，因为 C++ 不允许在可变参数包之后声明参数 `f`。
	The `template<class K, class\... Args, class F>` overloads only participate 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.	仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员类型别名时，`template<class k,="" args,="" class="" f="">` 这些重载版本才会参与重载决议。库假定 `Hash` 可同时接受 `K` 类型和 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class>
:1414	--	--
:1416	---	---
	try_emplace_and_[c]visit	try_emplace_and_[c]visit
	```c++ template<class... Args, class F1, class F2> bool try_emplace_and_visit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_cvisit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_visit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_cvisit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class K, class... Args, class F1, class F2> bool try_emplace_and_visit(K&& k, Args&&... args, F1&& f1, F2&& f2); template<class K, class... Args, class F1, class F2> bool try_emplace_and_cvisit(K&& k, Args&&... args, F1&& f1, F2&& f2); ```	```c++ template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class k,="" class...="" args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(K&& k, Args&&... args, F1&& f1, F2&& f2); template<class k,="" class...="" args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(K&& k, Args&&... args, F1&& f1, F2&& f2); ```</class></class></class...></class...></class...></class...>
	Inserts an element constructed from `k` and `args` into the table if there is no existing element with key `k` contained within it, 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 a `*_cvisit` overload is used.	若表中不存在键为`k`的元素，则将由`k`和`args`构造的元素插入表中，随后以非常量引用指向新创建的元素并调用`f1`。否则，以指向等价元素的引用调用`f2`；当且仅当使用`*_cvisit`重载版本时，该引用为常量引用。
:1439	Returns:;; `true` if an insert took place. + Concurrency:;; Blocking on rehashing of `*this`. Notes:;; No `value_type` is constructed if there is an element with an equivalent key; otherwise, the construction is of the form: + + -- ```c++	返回值：;; 若执行插入操作则返回 true。并发特性：;; 阻塞对 *this 的重哈希操作。注意：;; 若已存在等价键的元素，则不会构造 value_type；否则，构造方式如下：
:1447	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<Key>(k)), std::forward_as_tuple(std::forward<Args>(args)...))	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<key>(k)), std::forward_as_tuple(std::forward<args>(args)...))</args></key>
:1452	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<K>(k)), std::forward_as_tuple(std::forward<Args>(args)...)) ```	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<k>(k)), std::forward_as_tuple(std::forward<args>(args)...)) ```</args></k>
	The interface is exposition only, as C++ does not allow to declare parameter `f1` and `f2` after a variadic parameter pack.	该接口仅为说明性用法，因为 C++ 不允许在可变参数包之后声明 `f1` 和 `f2` 参数。
	The `template<class K, class\... Args, class F1, class F2>` overloads only participate 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.	仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为有效成员类型别名时，`template<class k,="" args,="" class="" f1,="" f2="">` 这些重载版本才会参与重载决议。库假定 `Hash` 可同时接受 `K` 类型与 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class>
:1461	--	--
:1463	---	---
	insert_or_assign	insert_or_assign
	```c++ template<class M> bool insert_or_assign(const key_type& k, M&& obj); template<class M> bool insert_or_assign(key_type&& k, M&& obj); template<class K, class M> bool insert_or_assign(K&& k, M&& obj); ```	```c++ template<class m=""> bool insert_or_assign(const key_type& k, M&& obj); template<class m=""> bool insert_or_assign(key_type&& k, M&& obj); template<class k,="" class="" m=""> bool insert_or_assign(K&& k, M&& obj); ```</class></class></class>
	Inserts a new element into the table or updates an existing one by assigning to the contained value.	向表中插入新元素，或通过为已包含的值赋值来更新现有元素。
	If there is an element with key `k`, then it is updated by assigning `std::forward<M>(obj)`.	若表中存在键为`k`的元素，则通过`std::forward<m>(obj)`赋值来更新该元素。</m>
	If there is no such element, it is added to the table as: ```c++	若不存在该元素，则以如下形式添加到表中：
	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<Key>(k)), std::forward_as_tuple(std::forward<M>(obj)))	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<key>(k)), std::forward_as_tuple(std::forward<m>(obj)))</m></key>
	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<K>(k)), std::forward_as_tuple(std::forward<M>(obj))) ```	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<k>(k)), std::forward_as_tuple(std::forward<m>(obj))) ```</m></k>

	English	Chinese (Simplified Han script)	Actions
	```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&& 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); ```</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:;; In a call of the form `insert_and_[c]visit(obj, f1, f2)`, 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[MoveInsertable^] 要求。返回值：;; 若执行插入操作则返回 `true`。并发特性：;; 阻塞对 `*this` 的重哈希操作。注意：;; 在形式为 `insert_and_[c]visit(obj, f1, f2)` 的调用中，仅当 `std::remove_reference<decltype(obj)>::type` 为 `value_type` 时，接受 `value_type&&` 参数的重载版本才会参与重载决议。</decltype(obj)>
	Insert Iterator Range and Visit	迭代器范围插入并访问
	```c++ template<class InputIterator, class F1, class F2> size_type insert_or_visit(InputIterator first, InputIterator last, F1 f1, F2 f2); template<class InputIterator, class F1, class F2> size_type insert_or_cvisit(InputIterator first, InputIterator last, F1 f2, F2 f2); ```	```c++ template<class inputiterator,="" class="" f1,="" f2=""> size_type insert_or_visit(InputIterator first, InputIterator last, F1 f1, F2 f2); template<class inputiterator,="" class="" f1,="" f2=""> size_type insert_or_cvisit(InputIterator first, InputIterator last, F1 f2, F2 f2); ```</class></class>
	Insert Initializer List and Visit	初始化列表插入并访问
	```c++ template<class F1, class F2> size_type insert_and_visit(std::initializer_list<value_type> il, F1 f1, F2 f2); template<class F1, class F2> size_type insert_and_cvisit(std::initializer_list<value_type> il, F1 f1, F2 f2); ```	```c++ template<class f1,="" class="" f2=""> size_type insert_and_visit(std::initializer_list<value_type> il, F1 f1, F2 f2); template<class f1,="" class="" f2=""> size_type insert_and_cvisit(std::initializer_list<value_type> il, F1 f1, F2 f2); ```</value_type></class></value_type></class>
	Insert Node and Visit	节点插入并访问
	```c++ template<class F1, class F2> insert_return_type insert_and_visit(node_type&& nh, F1 f1, F2 f2); template<class F1, class F2> insert_return_type insert_and_cvisit(node_type&& nh, F1 f1, F2 f2); ```	```c++ template<class f1,="" class="" f2=""> insert_return_type insert_and_visit(node_type&& nh, F1 f1, F2 f2); template<class f1,="" class="" f2=""> insert_return_type insert_and_cvisit(node_type&& nh, F1 f1, F2 f2); ```</class></class>
	If `nh` is empty, does nothing. Otherwise, inserts the associated element in the table if and only if there is no element in the table with a key equivalent to `nh.key()`, and then invokes `f1` with a non-const reference to the newly inserted element. Otherwise, invokes `f2` with a reference to the equivalent element; such reference is const iff `insert_or_cvisit` is used.	若`nh`为空，则不执行任何操作。否则，当且仅当哈希表中不存在与`nh.key()`等价的键时，将关联元素插入表中，随后以非常量引用指向新插入的元素并调用`f1`。若存在等价键，则调用`f2`并传入等价元素的引用；当且仅当使用`insert_or_cvisit`时，该引用为常量引用。
	Throws:;; If an exception is thrown by an operation other than a call to `hasher` or call to `f1` or `f2`, the function has no effect. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; Behavior is undefined if `nh` is not empty and the allocators of `nh` and the container are not equal.	若 `nh` 为空，则不执行任何操作。否则，当且仅当容器中不存在键等价于 `nh.key()` 的元素时，插入关联元素，并以新插入元素的非常量引用为参数调用 `f1` ；否则，以等价元素的引用为参数调用 `f2` ；当且仅当使用 `insert++_++or++_++cvisit` （此处应为 `insert++_++and++_++cvisit` ，可能是英文出了点错误）时该引用为常量引用。
	unlike xref:#concurrent_node_map_emplace[emplace], which simply forwards all arguments to ``value_type``'s constructor.	与 xref:#concurrent_node_map_emplace[emplace] 不同，该函数会直接将所有参数转发给 `value_type` 的构造函数。
	try_emplace_or_[c]visit	try_emplace_or_[c]visit
	The interface is exposition only, as C++ does not allow to declare a parameter `f` after a variadic parameter pack.	该接口仅为说明性用法，因为 C++ 不允许在可变参数包之后声明参数 `f`。
	The `template<class K, class\... Args, class F>` overloads only participate 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.	仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员类型别名时，`template<class k,="" args,="" class="" f="">` 这些重载版本才会参与重载决议。库假定 `Hash` 可同时接受 `K` 类型和 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class>
	try_emplace_and_[c]visit	try_emplace_and_[c]visit
	```c++ template<class... Args, class F1, class F2> bool try_emplace_and_visit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_cvisit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_visit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class... Args, class F1, class F2> bool try_emplace_and_cvisit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class K, class... Args, class F1, class F2> bool try_emplace_and_visit(K&& k, Args&&... args, F1&& f1, F2&& f2); template<class K, class... Args, class F1, class F2> bool try_emplace_and_cvisit(K&& k, Args&&... args, F1&& f1, F2&& f2); ```	```c++ template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(const key_type& k, Args&&... args, F1&& f1, F2&& f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class... args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(key_type&& k, Args&&... args, F1&& f1, F2&& f2); template<class k,="" class...="" args,="" class="" f1,="" f2=""> bool try_emplace_and_visit(K&& k, Args&&... args, F1&& f1, F2&& f2); template<class k,="" class...="" args,="" class="" f1,="" f2=""> bool try_emplace_and_cvisit(K&& k, Args&&... args, F1&& f1, F2&& f2); ```</class></class></class...></class...></class...></class...>
	Inserts an element constructed from `k` and `args` into the table if there is no existing element with key `k` contained within it, 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 a `*_cvisit` overload is used.	若表中不存在键为`k`的元素，则将由`k`和`args`构造的元素插入表中，随后以非常量引用指向新创建的元素并调用`f1`。否则，以指向等价元素的引用调用`f2`；当且仅当使用`*_cvisit`重载版本时，该引用为常量引用。
	The interface is exposition only, as C++ does not allow to declare parameter `f1` and `f2` after a variadic parameter pack.	该接口仅为说明性用法，因为 C++ 不允许在可变参数包之后声明 `f1` 和 `f2` 参数。
	The `template<class K, class\... Args, class F1, class F2>` overloads only participate 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.	仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 为有效成员类型别名时，`template<class k,="" args,="" class="" f1,="" f2="">` 这些重载版本才会参与重载决议。库假定 `Hash` 可同时接受 `K` 类型与 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class>
	insert_or_assign	insert_or_assign
	```c++ template<class M> bool insert_or_assign(const key_type& k, M&& obj); template<class M> bool insert_or_assign(key_type&& k, M&& obj); template<class K, class M> bool insert_or_assign(K&& k, M&& obj); ```	```c++ template<class m=""> bool insert_or_assign(const key_type& k, M&& obj); template<class m=""> bool insert_or_assign(key_type&& k, M&& obj); template<class k,="" class="" m=""> bool insert_or_assign(K&& k, M&& obj); ```</class></class></class>
	Inserts a new element into the table or updates an existing one by assigning to the contained value.	向表中插入新元素，或通过为已包含的值赋值来更新现有元素。
	If there is an element with key `k`, then it is updated by assigning `std::forward<M>(obj)`.	若表中存在键为`k`的元素，则通过`std::forward<m>(obj)`赋值来更新该元素。</m>
	If there is no such element, it is added to the table as: ```c++	若不存在该元素，则以如下形式添加到表中：
	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<Key>(k)), std::forward_as_tuple(std::forward<M>(obj)))	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<key>(k)), std::forward_as_tuple(std::forward<m>(obj)))</m></key>
	Returns:;; `true` if an insert took place. Concurrency:;; Blocking on rehashing of `*this`. Notes:;; The `template<class K, class M>` 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.	返回值：;; 若执行插入操作则返回 `true`。并发特性：;; 阻塞对 `*this` 的重哈希操作。注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员类型别名时，`template<class k,="" class="" m="">` 才参与重载决议。库假定 `Hash` 可同时接受 `K` 类型与 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class>
	erase	擦除
	```c++ size_type erase(const key_type& k); template<class K> size_type erase(const K& k); ```	```c++ size_type erase(const key_type& k); template<class k=""> size_type erase(const K& k); ```</class>
	Erases the element with key equivalent to `k` if it exists.	若存在键与 `k` 等价的元素，则删除该元素。
	Returns:;; The number of elements erased (0 or 1). Throws:;; Only throws an exception if it is thrown by `hasher` or `key_equal`. Notes:;; The `template<class K>` 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.	返回值：;; 删除的元素数量（0 或 1）。抛出异常：;; 仅当 `hasher` 或 `key_equal` 抛出异常时才会抛出。注意：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员类型别名时，`template<class k="">` 重载版本才参与重载决议。库假定 `Hash` 可同时接受 `K` 类型与 `Key` 类型作为参数，且 `Pred` 是透明的。这支持异构查找，从而避免实例化 `Key` 类型对象带来的性能开销。</class>

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Chinese (Simplified Han script) 360 characters editedCurrent translationState: Translated

```c++ template<class... Aargs,="" class ~~F1, class F2~~="" f1,="" f2=""> bool try_emplace_and_visit(const key_type& k, Args&&&... args, F1&~~& f1, F2&&~~amp;& f1, F2&& f2); template<class... Aargs,="" class ~~F1, class F2~~="" f1,="" f2=""> bool try_emplace_and_cvisit(const key_type& k, Args&&&... args, F1&~~& f1, F2&&~~amp;& f1, F2&& f2); template<class... Aargs,="" class ~~F1, class F2~~="" f1,="" f2=""> bool try_emplace_and_visit(key_type&~~& k, Args&&... args, F1&& f1, F2&&~~amp;& k, Args&&... args, F1&& f1, F2&& f2); template<class... Aargs,="" class ~~F1, class F2~~="" f1,="" f2=""> bool try_emplace_and_cvisit(key_type&~~& k, Args&&... args, F1&& f1, F2&&~~amp;& k, Args&&... args, F1&& f1, F2&& f2); template<class K,k,="" class... A="" args,="" class ~~F1, class F2~~="" f1,="" f2=""> bool try_emplace_and_visit(K&~~& k, Args&&... args, F1&& f1, F2&&~~amp;& k, Args&&... args, F1&& f1, F2&& f2); template<class K,k,="" class... A="" args,="" class ~~F1, class F2~~="" f1,="" f2=""> bool try_emplace_and_cvisit(K&~~& k, Args&&... args, F1&& f1, F2&& f2); ```~~amp;& k, Args&&... args, F1&& f1, F2&& f2); ```</class></class></class...></class...></class...></class...>

06/05/2026

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String added in the repository

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Chinese (Simplified Han script) 747 characters editedPrevious translationState: Needs editing (Needs rewriting)

06/05/2026

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safe-html, strict-same

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52089

Source string location

:1419

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06/05/2026

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06/05/2026

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doc/modules/ROOT/pages/reference/concurrent_node_map_zh_Hans.adoc, string 337

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