Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Unordered Flat Set (adoc)

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	English 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. 237/10000 · 237
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	English Effects:;; `x.swap(y)` Throws:;; Nothing unless `key_equal` or `hasher` throw on swapping. 90/10000 · 90
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	English --- 3/10000 · 3
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	English erase_if 8/10000 · 8
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	English ```c++ template<class K, class T, class H, class P, class A, class Predicate> typename unordered_flat_set<K, T, H, P, A>::size_type erase_if(unordered_flat_set<K, T, H, P, A>& c, Predicate pred); ``` 199/10000 · 199
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	English Traverses the container `c` and removes all elements for which the supplied predicate returns `true`. 101/10000 · 101
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	English 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(); ``` 250/10000 · 250
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	English Serialization 13/10000 · 13
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	English ``unordered_flat_set``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. 213/10000 · 213
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	English Saving an unordered_flat_set to an archive 42/10000 · 42
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	English Saves all the elements of an `unordered_flat_set` `x` to an archive (XML archive) `ar`. 87/10000 · 87
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	English Requires:;; `value_type` is serializable (XML serializable), and it supports Boost.Serialization `save_construct_data`/`load_construct_data` protocol (automatically suported by https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^] types). 272/10000 · 272
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	English --- 3/10000 · 3
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	English Loading an unordered_flat_set from an archive 45/10000 · 45
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	English Deletes all preexisting elements of an `unordered_flat_set` `x` and inserts from an archive (XML archive) `ar` restored copies of the elements of the original `unordered_flat_set` `other` saved to the storage read by `ar`. 222/10000 · 222
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	English Requires:;; `x.key_equal()` is functionally equivalent to `other.key_equal()`. 78/10000 · 78
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	English --- 3/10000 · 3
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	English Saving an iterator/const_iterator to an archive 47/10000 · 47
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	English Saves the positional information of an `iterator` (`const_iterator`) `it` to an archive (XML archive) `ar`. `it` can be and `end()` iterator. 141/10000 · 141
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	English Requires:;; The `unordered_flat_set` `x` pointed to by `it` has been previously saved to `ar`, and no modifying operations have been issued on `x` between saving of `x` and saving of `it`. 188/10000 · 188

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