Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Unordered Multimap (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: ```c++ template<class Key, class T, class Hash, class Pred, class …

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Key	English	Chinese (Simplified Han script)
	__iter-key-type__	__iter-key-type__
	__iter-mapped-type__	__iter-mapped-type__
	__iter-to-alloc-type__	__iter-to-alloc-type__
	Equality Comparisons	相等性比较
	operator	运算符
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> bool operator==(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x, const unordered_multimap<Key, T, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> bool operator==(const unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& x, const unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& y); ```</key,></key,></class>
	Return `true` if `x.size() == y.size()` and for every equivalent key group in `x`, there is a group in `y` for the same key, which is a permutation (using `operator==` to compare the value types).	若 `x.size() == y.size()` 且对于 `x` 中的每个等价键组，在 `y` 中均存在一个具有相同键的组，并且该组是 `x` 中对应组的置换（使用 `operator==` 比较值类型），则返回 `true`。
:1428	Notes:;; Behavior is undefined if the two containers don't have equivalent equality predicates.	注意：如果两个容器不具有等价的相等谓词，则行为未定义。
:1430	---	---
	operator!	operator!
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> bool operator!=(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x, const unordered_multimap<Key, T, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> bool operator!=(const unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& x, const unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& y); ```</key,></key,></class>
	Return `false` if `x.size() == y.size()` and for every equivalent key group in `x`, there is a group in `y` for the same key, which is a permutation (using `operator==` to compare the value types).	若 `x.size() == y.size()` 且对于 `x` 中的每个等价键组，在 `y` 中均存在一个具有相同键的组，并且该组是 `x` 中对应组的置换（使用 `operator==` 比较值类型），则返回 `false`。
:1442	Notes:;; Behavior is undefined if the two containers don't have equivalent equality predicates.	注意：如果两个容器不具有等价的相等谓词，则行为未定义。
:1444	---	---
	Swap	交换
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> void swap(unordered_multimap<Key, T, Hash, Pred, Alloc>& x, unordered_multimap<Key, T, Hash, Pred, Alloc>& y) noexcept(noexcept(x.swap(y))); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> void swap(unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& x, unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& y) noexcept(noexcept(x.swap(y))); ```</key,></key,></class>
	Swaps the contents of `x` and `y`.	交换 x 和 y 的内容。
:1456	If `Allocator::propagate_on_container_swap` is declared and `Allocator::propagate_on_container_swap::value` is `true` then the containers' allocators are swapped. Otherwise, swapping with unequal allocators results in undefined behavior.	如果 `Allocator::propagate_on_container_swap` 被声明且 `Allocator::propagate_on_container_swap::value` 为 `true`，则交换容器的分配器。否则，使用不相等的分配器进行交换将导致未定义行为。
	Effects:;; `x.swap(y)` Throws:;; Doesn't throw an exception unless it is thrown by the copy constructor or copy assignment operator of `key_equal` or `hasher`. Notes:;; The exception specifications aren't quite the same as the C++11 standard, as the equality predicate and hash function are swapped using their copy constructors.	效果：`x.swap(y)` 抛出：除非 `key_equal` 或 `hasher` 的拷贝构造函数或拷贝赋值运算符抛出异常，否则不抛出任何异常。注意：异常规范与 C++11 标准不完全相同，因为相等谓词和哈希函数是使用其拷贝构造函数进行交换的。
:1463	---	---
	erase_if	erase_if
	```c++ template<class K, class T, class H, class P, class A, class Predicate> typename unordered_multimap<K, T, H, P, A>::size_type erase_if(unordered_multimap<K, T, H, P, A>& c, Predicate pred); ```	```c++ template<class k,="" class="" t,="" h,="" p,="" a,="" predicate=""> typename unordered_multimap<k, t,="" h,="" p,="" a="">::size_type erase_if(unordered_multimap<k, t,="" h,="" p,="" a="">& c, Predicate pred); ```</k,></k,></class>
	Traverses the container `c` and removes all elements for which the supplied predicate returns `true`.	遍历容器 `c`，并移除所有使给定谓词返回 `true` 的元素。
	Returns:;; The number of erased elements. Notes:;; Equivalent to: + + ```c++ auto original_size = c.size(); for (auto i = c.begin(), last = c.end(); i != last; ) { if (pred(*i)) { i = c.erase(i); } else { ++i; } } return original_size - c.size(); ``` + Note that the references passed to `pred` are non-const.	返回：被擦除的元素数量。注意：等价于： ```c++auto original_size = c.size();for (auto i = c.begin(), last = c.end(); i != last; ) {if (pred(*i)) {i = c.erase(i);} else {++i;}}return original_size - c.size(); ``` 注意，传递给 `pred` 的引用是非常量的。
	Serialization	序列化
	``unordered_multimap``s can be archived/retrieved by means of link:../../../../../serialization/index.html[Boost.Serialization^] using the API provided by this library. Both regular and XML archives are supported.	`unordered_multimap` 可以通过本库提供的 API，借助 link:../../../../../serialization/index.html[Boost.Serialization^] 进行归档/恢复。支持常规归档和 XML 归档。
	Saving an unordered_multimap to an archive	将 unordered_multimap 保存到归档
	Saves all the elements of an `unordered_multimap` `x` to an archive (XML archive) `ar`.	将 `unordered_multimap` 容器 `x` 的所有元素保存到归档（XML 归档） `ar` 中。
	Requires:;; `std::remove_const<key_type>::type` and `std::remove_const<mapped_type>::type` are serializable (XML serializable), and they do support Boost.Serialization `save_construct_data`/`load_construct_data` protocol (automatically suported by https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^] types).	要求：`std::remove_const<key_type>::type` 和 `std::remove_const<mapped_type>::type` 必须是可序列化的（对于 XML 归档需支持 XML 序列化），并且它们必须支持 Boost.Serialization 的 `save_construct_data`/`load_construct_data` 协议（该协议由满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造^] 的类型自动支持）。</mapped_type></key_type>
:1509	---	---
	Loading an unordered_multimap from an archive	从归档加载 unordered_multimap

	English	Chinese (Simplified Han script)	Actions
	__iter-value-type__	_iter-value-type_
	__iter-key-type__	__iter-key-type__
	operator	运算符
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> bool operator==(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x, const unordered_multimap<Key, T, Hash, Pred, Alloc>& y); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> bool operator==(const unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& x, const unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& y); ```</key,></key,></class>
	```c++ template<class Key, class T, class Hash, class Pred, class Alloc> void swap(unordered_multimap<Key, T, Hash, Pred, Alloc>& x, unordered_multimap<Key, T, Hash, Pred, Alloc>& y) noexcept(noexcept(x.swap(y))); ```	```c++ template<class key,="" class="" t,="" hash,="" pred,="" alloc=""> void swap(unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& x, unordered_multimap<key, t,="" hash,="" pred,="" alloc="">& y) noexcept(noexcept(x.swap(y))); ```</key,></key,></class>
	erase_if	erase_if
	`boost::unordered_multimap` — An unordered associative container that associates keys with another value. The same key can be stored multiple times.	`boost::unordered_multimap` — 一个无序关联容器，将键与对应值相关联。同一个键可以多次存储。
	Description	描述
	Template Parameters	模板参数
	`Key` must be https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^] from the container (i.e. `allocator_traits` can destroy it).	`Key` 必须可以从容器中 https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^]（即 `allocator_traits` 能够销毁它）。
	_T_	_T_
	`T` must be https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^] from the container (i.e. `allocator_traits` can destroy it).	`T` 必须可以从容器中 https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^]（即 `allocator_traits` 能够销毁它）。
	_Hash_	_Hash_
	A unary function object type that acts a hash function for a `Key`. It takes a single argument of type `Key` and returns a value of type `std::size_t`.	一个一元函数对象类型，用作 `Key` 的哈希函数。它接受一个 `Key` 类型的参数，并返回一个 `std::size_t` 类型的值。
	A binary function object that implements an equivalence relation on values of type `Key`. A binary function object that induces an equivalence relation on values of type `Key`. It takes two arguments of type `Key` and returns a value of type bool.	一个二元函数对象，用于在 `Key` 类型的值上实现等价关系。它接受两个 `Key` 类型的参数，并返回一个 `bool` 类型的值。
	_Allocator_	_Allocator_
	An allocator whose value type is the same as the container's value type.	一个分配器，其值类型与容器的值类型相同。
	Allocators using https://en.cppreference.com/w/cpp/named_req/Allocator#Fancy_pointers[fancy pointers] are supported.	支持使用 https://en.cppreference.com/w/cpp/named_req/Allocator#Fancy_pointers[异形指针] 的分配器。
	`BOOST_UNORDERED_ENABLE_SERIALIZATION_COMPATIBILITY_V0`	`BOOST_UNORDERED_ENABLE_SERIALIZATION_COMPATIBILITY_V0`
	Requires:;; If `x` is the `unordered_multimap` `it` points to, no modifying operations have been issued on `x` between loading of `x` and loading of `it`.	要求：如果 `x` 是 `it` 所指向的 `unordered_multimap` 容器，则在加载 `x` 和加载 `it` 之间，不能对 `x` 执行任何修改操作。

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