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

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392 :1483

	English Swaps the contents of `x` and `y`. 34/10000 · 34
:1485 :1485

	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
394 :1488

	English Effects:;; `x.swap(y)` Throws:;; Nothing unless `key_equal` or `hasher` throw on swapping. 90/10000 · 90
:1491 :1491

	English --- 3/10000 · 3
396 :1493

	English erase_if 8/10000 · 8
397 :1494

	English ```c++ template<class K, class T, class H, class P, class A, class Predicate> typename unordered_flat_map<K, T, H, P, A>::size_type erase_if(unordered_flat_map<K, T, H, P, A>& c, Predicate pred); ``` 199/10000 · 199
398 :1500

	English Traverses the container `c` and removes all elements for which the supplied predicate returns `true`. 101/10000 · 101
399 :1503

	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(); ``` + Note that the references passed to `pred` are non-const. 309/10000 · 309
400 :1520

	English Serialization 13/10000 · 13
401 :1522

	English ``unordered_flat_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. 213/10000 · 213
402 :1526

	English Saving an unordered_flat_map to an archive 42/10000 · 42
403 :1528

	English Saves all the elements of an `unordered_flat_map` `x` to an archive (XML archive) `ar`. 87/10000 · 87
404 :1531

	English 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). 343/10000 · 343
:1537 :1537

	English --- 3/10000 · 3
406 :1539

	English Loading an unordered_flat_map from an archive 45/10000 · 45
407 :1541

	English Deletes all preexisting elements of an `unordered_flat_map` `x` and inserts from an archive (XML archive) `ar` restored copies of the elements of the original `unordered_flat_map` `other` saved to the storage read by `ar`. 222/10000 · 222
408 :1546

	English Requires:;; `x.key_equal()` is functionally equivalent to `other.key_equal()`. 78/10000 · 78
:1548 :1548

	English --- 3/10000 · 3
410 :1550

	English Saving an iterator/const_iterator to an archive 47/10000 · 47
411 :1552

	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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