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Saving an unordered_node_map to an archive
Saving an将 unordered_node_map to an archive保存到归档中
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``unordered_node_map``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_node_map``s can be archived/retrieved by means of 可以通过本库提供的 API，借助 link:../../../../../serialization/index.html[Boost.Serialization^] using the API provided by this library. Both regular and XML archives are supported.进行归档/恢复。支持常规归档和 XML 归档。
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Serialization
Serialization序列化
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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.
Returns:;; The number of erased elements. Notes:;; Equivalent to: + + 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; } }
++i;
}
}
return original_size - c.size();
``` + Note that the references passed to `pred` are non-const.
注意，传递给 `pred` 的引用是非常量的。
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Traverses the container `c` and removes all elements for which the supplied predicate returns `true`.
Traverses the container `c` and removes all elements for which the supplied predicate returns遍历容器 `c`，并移除所有使给定谓词返回 `true`. 的元素。
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```c++ template<class K, class T, class H, class P, class A, class Predicate> typename unordered_node_map<K, T, H, P, A>::size_type erase_if(unordered_node_map<K, T, H, P, A>& c, Predicate pred); ```
```c++ template<class K,k,="" class T, class H, class P, class A, class P="" t,="" h,="" p,="" a,="" predicate=""> typename unordered_node_map<K, T, H, P, Ak, t,="" h,="" p,="" a="">::size_type erase_if(unordered_node_map<K, T, H, P, A>&k, t,="" h,="" p,="" a="">&amp; c, Predicate pred); ```</k,></k,></class>
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erase_if
erase_if
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---
---
:1595
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Effects:;; `x.swap(y)` Throws:;; Nothing unless `key_equal` or `hasher` throw on swapping.
Effects:;; 效果：`x.swap(y)` Throws:;; Nothing unless
抛出：除非 `key_equal` or或 `hasher` throw on swapping.在交换时抛出异常，否则不抛出任何异常。
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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.
If如果 `Allocator::propagate_on_container_swap` is declared and被声明且 `Allocator::propagate_on_container_swap::value` is为 `true` then the containers' allocators are swapped. Otherwise, swapping with unequal allocators results in undefined behavior.，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。
:1589
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Swaps the contents of `x` and `y`.
Swaps the contents of交换 `x` and和 `y`. 的内容。
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```c++ template<class Key, class T, class Hash, class Pred, class Alloc> void swap(unordered_node_map<Key, T, Hash, Pred, Alloc>& x, unordered_node_map<Key, T, Hash, Pred, Alloc>& y) noexcept(noexcept(x.swap(y))); ```
```c++ template<class Kkey,="" class T, class Hash, class Pred, class A="" t,="" hash,="" pred,="" alloc=""> void swap(unordered_node_map<Kkey, T, Hash, Pred, Alloc>&t,="" hash,="" pred,="" alloc="">&amp; x, unordered_node_map<Kkey, T, Hash, Pred, Alloc>&t,="" hash,="" pred,="" alloc="">&amp; y) noexcept(noexcept(x.swap(y))); ```</key,></key,></class>
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Swap
Swap交换
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Notes:;; Behavior is undefined if the two containers don't have equivalent equality predicates.
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。
:1577
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Return `false` if `x.size() == y.size()` and for every element in `x`, there is an element in `y` with the same key, with an equal value (using `operator==` to compare the value types).
Return `false` if若 `x.size() == y.size()` and for every element in `x`, there is an element in `y` with the same key, with an equal value (using `operator==` to compare the value types).且对于 `x` 中的每个元素，在 `y` 中均存在一个具有相同键且值相等（使用 `operator==` 比较值类型）的元素，则返回 `false`。
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```c++ template<class Key, class T, class Hash, class Pred, class Alloc> bool operator!=(const unordered_node_map<Key, T, Hash, Pred, Alloc>& x, const unordered_node_map<Key, T, Hash, Pred, Alloc>& y); ```
```c++ template<class Kkey,="" class T, class Hash, class Pred, class A="" t,="" hash,="" pred,="" alloc=""> bool operator!=(const unordered_node_map<Kkey, T, Hash, Pred, Alloc>&t,="" hash,="" pred,="" alloc="">&amp; x, const unordered_node_map<Kkey, T, Hash, Pred, Alloc>& y); ```t,="" hash,="" pred,="" alloc="">&amp; y); ```</key,></key,></class>
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operator!
operator!
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---
---
:1565
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Notes:;; Behavior is undefined if the two containers don't have equivalent equality predicates.
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。
:1563
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Return `true` if `x.size() == y.size()` and for every element in `x`, there is an element in `y` with the same key, with an equal value (using `operator==` to compare the value types).
Return `true` if若 `x.size() == y.size()` and for every element in `x`, there is an element in `y` with the same key, with an equal value (using `operator==` to compare the value types).且对于 `x` 中的每个元素，在 `y` 中均存在一个具有相同键且值相等（使用 `operator==` 比较值类型）的元素，则返回 `true`。
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