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

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Key	English	Chinese (Simplified Han script)
	```c++ insert_return_type insert(node_type&& nh); ```	```c++ insert_return_type insert(node_type&& nh); ```
	If `nh` is not empty, inserts the associated element in the container if and only if there is no element in the container with a key equivalent to `nh.key()`. `nh` is empty when the function returns.	如果 `nh` 非空，则当且仅当容器中没有键与 `nh.key()` 等价的元素时，才将关联的元素插入容器。函数返回时 `nh` 变为空。
	Returns:;; An `insert_return_type` object constructed from `position`, `inserted` and `node`: +	返回：一个 `insert_return_type` 对象，由 `position`、`inserted` 和 `node` 构造而成。
	If `nh` is empty, `inserted` is `false`, `position` is `end()`, and `node` is empty.	若 `nh` 为空，则 `inserted` 为 `false` ， `position` 为 `end()` ，且 `node` 为空。
	Otherwise if the insertion took place, `inserted` is true, `position` points to the inserted element, and `node` is empty.	否则，若插入操作发生，则 `inserted` 为 `true` ， `position` 指向被插入的元素，且 `node` 为空。
	If the insertion failed, `inserted` is false, `node` has the previous value of `nh`, and `position` points to an element with a key equivalent to `nh.key()`.	若插入操作失败，则 `inserted` 为 `false` ， `node` 保留 `nh` 的原始值，且 `position` 指向与 `nh.key()` 等效的元素。
	Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Behavior is undefined if `nh` is not empty and the allocators of `nh` and the container are not equal.	若 `nh` 非空，则当且仅当容器中不存在键等价于 `nh.key()` 的元素时，插入其关联元素。函数返回时 `nh` 为空。
:950	---	---
	Insert Node with Hint	带提示的节点插入
	```c++ iterator insert(const_iterator hint, node_type&& nh); ```	```c++ iterator insert(const_iterator hint, node_type&& nh); ```
	If `nh` is not empty, inserts the associated element in the container if and only if there is no element in the container with a key equivalent to `nh.key()`. `nh` becomes empty if insertion took place, otherwise it is not changed.	如果 `nh` 非空，则当且仅当容器中没有键与 `nh.key()` 等价的元素时，才将关联的元素插入容器。如果插入发生，则 `nh` 变为空；否则 `nh` 不变。
:960	`hint` is a suggestion to where the element should be inserted. This implementation ignores it.	`hint` 是关于元素插入位置的建议。此实现会忽略该建议。
	Returns:;; The iterator returned is `end()` if `nh` is empty. If insertion took place, then the iterator points to the newly inserted element; otherwise, it points to the element with equivalent key. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Behavior is undefined if `nh` is not empty and the allocators of `nh` and the container are not equal.	返回：如果 `nh` 为空，则返回的迭代器为 `end()`。如果插入发生，则迭代器指向新插入的元素；否则，指向具有等价键的元素。抛出：如果除调用 `hasher` 之外的操作抛出异常，则该函数无效果。注意：如果 `nh` 非空且 `nh` 与容器的分配器不相等，则行为未定义。
:968	---	---
	try_emplace	try_emplace
	```c++ template<class... Args> std::pair<iterator, bool> try_emplace(const key_type& k, Args&&... args); template<class... Args> std::pair<iterator, bool> try_emplace(key_type&& k, Args&&... args); template<class K, class... Args> std::pair<iterator, bool> try_emplace(K&& k, Args&&... args); ```	```c++ template<class... args=""> std::pair<iterator, bool=""> try_emplace(const key_type& k, Args&&... args); template<class... args=""> std::pair<iterator, bool=""> try_emplace(key_type&& k, Args&&... args); template<class k,="" class...="" args=""> std::pair<iterator, bool=""> try_emplace(K&& k, Args&&... args); ```</iterator,></class></iterator,></class...></iterator,></class...>
:980	Inserts a new element into the container if there is no existing element with key `k` contained within it.	如果容器中不存在键为 `k` 的元素，则插入一个新元素。
:982	If there is an existing element with key `k` this function does nothing.	如果已存在键为 `k` 的元素，则该函数不执行任何操作。
	Returns:;; The `bool` component of the return type is `true` if an insert took place. + + If an insert took place, then the iterator points to the newly inserted element. Otherwise, it points to the element with equivalent key. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; This function is similiar to xref:#unordered_node_map_emplace[emplace], with the difference that no `value_type` is constructed if there is an element with an equivalent key; otherwise, the construction is of the form: + + -- ```c++	返回：返回类型的 `bool` 分量为 `true` 表示发生了插入。如果发生了插入，则迭代器指向新插入的元素；否则，指向具有等价键的元素。抛出：如果除调用 `hasher` 之外的操作抛出异常，则该函数无效果。注意：此函数类似于 xref:#unordered_node_map_emplace[emplace]，区别在于如果存在具有等价键的元素，则不构造 `value_type`；否则，构造形式为： ```c++
:995	value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<Key>(k)), std::forward_as_tuple(std::forward<Args>(args)...))	```c++ value_type(std::piecewise_construct, std::forward_as_tuple(std::forward<key>(k)), std::forward_as_tuple(std::forward<args>(args)...)) ```</args></key>
:1000	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>
	unlike xref:#unordered_node_map_emplace[emplace], which simply forwards all arguments to ``value_type``'s constructor.	与 xref:#unordered_node_map_emplace[emplace] 不同，后者只是将所有参数直接转发给 `value_type` 的构造函数。
:1007	Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load.	可能使迭代器失效，但仅当插入导致负载大于最大负载时才会发生。
:1009	The `template<class K, class\... Args>` overload only participates in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs and neither `iterator` nor `const_iterator` are implicitly convertible from `K`. 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.	`template<class k,="" args="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef，且 `iterator` 和 `const_iterator` 都不能从 `K` 隐式转换时参与重载决议。库假定 `Hash` 可同时使用 `K` 和 `Key` 调用，且 `Pred` 是透明的。这支持了异构查找，从而避免了实例化 `Key` 类型对象的开销。</class>
:1011	--	--
:1013	---	---
	try_emplace with Hint	带提示的 try_emplace
	```c++ template<class... Args> iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args); template<class... Args> iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args); template<class K, class... Args> iterator try_emplace(const_iterator hint, K&& k, Args&&... args); ```	```c++ template<class... args=""> iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args); template<class... args=""> iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args); template<class k,="" class...="" args=""> iterator try_emplace(const_iterator hint, K&& k, Args&&... args); ```</class></class...></class...>
:1025	Inserts a new element into the container if there is no existing element with key `k` contained within it.	如果容器中不存在键为 `k` 的元素，则插入一个新元素。
:1027	If there is an existing element with key `k` this function does nothing.	如果已存在键为 `k` 的元素，则该函数不执行任何操作。
	`hint` is a suggestion to where the element should be inserted. This implementation ignores it.	`hint` 是关于元素插入位置的建议。此实现会忽略该建议。

	English	Chinese (Simplified Han script)	Actions
	emplace	原地构造
	```c++ template<class... Args> std::pair<iterator, bool> emplace(Args&&... args); ```	```c++ template<class... args=""> std::pair<iterator, bool=""> emplace(Args&&... args); ```</iterator,></class...>
	emplace_hint	emplace_hint
	```c++ template<class... Args> iterator emplace_hint(const_iterator position, Args&&... args); ```	```c++ template<class... args=""> iterator emplace_hint(const_iterator position, Args&&... args); ```</class...>
	Copy Insert with Hint	带提示的复制插入
	Insert Initializer List	初始化列表插入
	```c++ void insert(std::initializer_list<value_type>); ```	```c++ void insert(std::initializer_list<value_type>); ```</value_type>
	Insert Node	节点插入
	```c++ insert_return_type insert(node_type&& nh); ```	```c++ insert_return_type insert(node_type&& nh); ```
	If `nh` is not empty, inserts the associated element in the container if and only if there is no element in the container with a key equivalent to `nh.key()`. `nh` is empty when the function returns.	如果 `nh` 非空，则当且仅当容器中没有键与 `nh.key()` 等价的元素时，才将关联的元素插入容器。函数返回时 `nh` 变为空。
	Returns:;; An `insert_return_type` object constructed from `position`, `inserted` and `node`: +	返回：一个 `insert_return_type` 对象，由 `position`、`inserted` 和 `node` 构造而成。
	Otherwise if the insertion took place, `inserted` is true, `position` points to the inserted element, and `node` is empty.	否则，若插入操作发生，则 `inserted` 为 `true` ， `position` 指向被插入的元素，且 `node` 为空。
	If the insertion failed, `inserted` is false, `node` has the previous value of `nh`, and `position` points to an element with a key equivalent to `nh.key()`.	若插入操作失败，则 `inserted` 为 `false` ， `node` 保留 `nh` 的原始值，且 `position` 指向与 `nh.key()` 等效的元素。
	Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Behavior is undefined if `nh` is not empty and the allocators of `nh` and the container are not equal.	若 `nh` 非空，则当且仅当容器中不存在键等价于 `nh.key()` 的元素时，插入其关联元素。函数返回时 `nh` 为空。
	try_emplace	try_emplace
	```c++ template<class... Args> std::pair<iterator, bool> try_emplace(const key_type& k, Args&&... args); template<class... Args> std::pair<iterator, bool> try_emplace(key_type&& k, Args&&... args); template<class K, class... Args> std::pair<iterator, bool> try_emplace(K&& k, Args&&... args); ```	```c++ template<class... args=""> std::pair<iterator, bool=""> try_emplace(const key_type& k, Args&&... args); template<class... args=""> std::pair<iterator, bool=""> try_emplace(key_type&& k, Args&&... args); template<class k,="" class...="" args=""> std::pair<iterator, bool=""> try_emplace(K&& k, Args&&... args); ```</iterator,></class></iterator,></class...></iterator,></class...>
	try_emplace with Hint	带提示的 try_emplace
	unlike xref:#unordered_node_map_emplace_hint[emplace_hint], which simply forwards all arguments to ``value_type``'s constructor.	与 xref:#unordered_node_map_emplace_hint[emplace_hint] 不同，后者只是将所有参数直接转发给 `value_type` 的构造函数。
	insert_or_assign	insert_or_assign
	insert_or_assign with Hint	带提示位置的 insert_or_assign
	Erase by Position	按位置擦除
	Erase the element pointed to by `position`.	擦除由 `position` 指向的元素。
	Returns:;; An opaque object implicitly convertible to the `iterator` or `const_iterator` immediately following `position` prior to the erasure. Throws:;; Nothing. Notes:;; The opaque object returned must only be discarded or immediately converted to `iterator` or `const_iterator`.	返回：一个不透明对象，可隐式转换为 `position` 在被擦除之前紧后位置的 `iterator` 或 `const_iterator`。抛出：不抛出任何异常。注意：返回的不透明对象只能被丢弃或立即转换为 `iterator` 或 `const_iterator`。
	Erase by Key	通过键擦除
	```c++ size_type erase(const key_type& k); template<class K> size_type erase(K&& k); ```	```c++ size_type erase(const key_type& k); template<class k=""> size_type erase(K&& k); ```</class>
	Erase Range	范围擦除
	```c++ iterator erase(const_iterator first, const_iterator last); ```	```c++ iterator erase(const_iterator first, const_iterator last); ```
	Erases the elements in the range from `first` to `last`.	Erases the elements in the range from `first` to `last`.
	Returns:;; The iterator following the erased elements - i.e. `last`. Throws:;; Nothing in this implementation (neither the `hasher` nor the `key_equal` objects are called).	返回：被擦除元素之后的迭代器——即 `last`。抛出：在此实现中不抛出任何异常（既不调用 `hasher` 也不调用 `key_equal` 对象）。
	Swaps the contents of the container with the parameter.	交换容器的内容与参数的内容。

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Chinese (Simplified Han script) 145 characters editedCurrent translationState: Translated

```c++
template<class... ~~Args>~~ args="">
std::pair<iterator, bool=""> try_emplace(const key_type& k, Args&&&... args);
template<class... ~~Args>~~ args="">
std::pair<iterator, bool=""> try_emplace(key_type&~~& k, Args&&~~amp;& k, Args&&... args);
template<class K,k,="" class... ~~Args>~~ ="" args="">
std::pair<iterator, bool=""> try_emplace(K&~~& k, Args&&~~amp;& k, Args&&... args);
```</iterator,></class></iterator,></class...></iterator,></class...>

06/05/2026

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Chinese (Simplified Han script) 296 characters editedPrevious translationState: Needs editing (Needs rewriting)

06/05/2026

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52985

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:971

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doc/modules/ROOT/pages/reference/unordered_node_map_zh_Hans.adoc, string 232

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