Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Unordered Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate

English

Returns:;; An iterator pointing to an element with key equivalent to `k`, or `b.end()` if no such element exists. Notes:;; The templated overloads containing `CompatibleKey`, `CompatibleHash` and `CompatiblePredicate` are non-standard extensions which allow you to use a compatible hash function and equality predicate for a key of a different type in order to avoid an expensive type cast. In general, its use is not encouraged and instead the `K` member function templates should be used. + + The `template<class K>` overloads only participate in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. 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.

349 :1367
	English get_allocator
	Chinese (Simplified Han script) get_allocator 13/130 · 13 Needs editing
350 :1368
	English ``` allocator_type get_allocator() const; ```
	Chinese (Simplified Han script) ``` allocator_type get_allocator() const; ``` 45/450 · 45 Needs editing
:1372 :1372
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
352 :1374
	English hash_function
	Chinese (Simplified Han script) 哈希函数 4/130 · 13 Needs editing
353 :1375
	English ``` hasher hash_function() const; ```
	Chinese (Simplified Han script) ``` hasher hash_function() const; ``` 37/370 · 37 Needs editing
354 :1380
	English Returns:;; The container's hash function.
	Chinese (Simplified Han script) 返回：;; 容器的哈希函数。 14/410 · 41 Needs editing
:1382 :1382
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
356 :1384
	English key_eq
	Chinese (Simplified Han script) key_eq 6/100 · 6 Needs editing
357 :1385
	English ``` key_equal key_eq() const; ```
	Chinese (Simplified Han script) ``` key_equal key_eq() const; ``` 33/330 · 33 Needs editing
358 :1390
	English Returns:;; The container's key equality predicate
	Chinese (Simplified Han script) 返回：;; 容器的键相等谓词。 15/490 · 49 Needs editing
:1392 :1392
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
360 :1394
	English Lookup
	Chinese (Simplified Han script) 查找 2/100 · 6 Needs editing
361 :1396
	English find
	Chinese (Simplified Han script) find 4/100 · 4 Needs editing
362 :1397
	English ```c++ iterator find(const key_type& k); const_iterator find(const key_type& k) const; template<class K> iterator find(const K& k); template<class K> const_iterator find(const K& k) const; template<typename CompatibleKey, typename CompatibleHash, typename CompatiblePredicate> iterator find(CompatibleKey const& k, CompatibleHash const& hash, CompatiblePredicate const& eq); template<typename CompatibleKey, typename CompatibleHash, typename CompatiblePredicate> const_iterator find(CompatibleKey const& k, CompatibleHash const& hash, CompatiblePredicate const& eq) const;
	Chinese (Simplified Han script) ```c++ iterator find(const key_type& k); const_iterator find(const key_type& k) const; template<class k=""> iterator find(const K& k); template<class k=""> const_iterator find(const K& k) const; template<typename compatiblekey,="" typename="" compatiblehash,="" compatiblepredicate=""> iterator find(CompatibleKey const& k, CompatibleHash const& hash, CompatiblePredicate const& eq); template<typename compatiblekey,="" typename="" compatiblehash,="" compatiblepredicate=""> const_iterator find(CompatibleKey const& k, CompatibleHash const& hash, CompatiblePredicate const& eq) const;</typename></typename></class></class> 684/5940 · 594 Needs editing
363 :1411
	English ```
	Chinese (Simplified Han script) ``` 3/100 · 3 Needs editing
364 :1414
	English Returns:;; An iterator pointing to an element with key equivalent to `k`, or `b.end()` if no such element exists. Notes:;; The templated overloads containing `CompatibleKey`, `CompatibleHash` and `CompatiblePredicate` are non-standard extensions which allow you to use a compatible hash function and equality predicate for a key of a different type in order to avoid an expensive type cast. In general, its use is not encouraged and instead the `K` member function templates should be used. + + The `template<class K>` overloads only participate in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. 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.
	Chinese (Simplified Han script) 返回：;; 指向键与 `k` 等价之元素的迭代器；若无此元素，则返回 `b.end()`。备注：;; 包含 `CompatibleKey`、`CompatibleHash` 和 `CompatiblePredicate` 的模板重载属于非标准扩展，允许使用兼容的哈希函数和相等谓词来处理不同类型的键，从而避免昂贵的类型转换。通常不建议使用它们，而应使用 `K` 成员函数模板。此外，仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时，`template<class k="">` 重载才会参与重载决议。库假定 `Hash` 可同时以 `K` 和 `Key` 类型调用，且 `Pred` 是透明的。这支持了异构查找，从而避免了实例化 `Key` 类型的开销。</class> 380/8520 · 852 Needs editing
:1419 :1419
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
366 :1421
	English count
	Chinese (Simplified Han script) count 5/100 · 5 Needs editing
367 :1422
	English ```c++ size_type count(const key_type& k) const; template<class K> size_type count(const K& k) const; ```
	Chinese (Simplified Han script) ```c++ size_type count(const key_type& k) const; template<class k=""> size_type count(const K& k) const; ```</class> 136/1170 · 117 Needs editing
368 :1429
	English Returns:;; The number of elements with key equivalent to `k`. Notes:;; The `template<class K>` overload only participates in overload resolution if `Hash::is_transparent` and `Pred::is_transparent` are valid member typedefs. 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.
	Chinese (Simplified Han script) 返回：;; 键与 `k` 等价的元素个数。备注：;; 仅当 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时，`template<class k="">` 重载才会参与重载决议。库假定 `Hash` 可同时以 `K` 和 `Key` 类型调用，且 `Pred` 是透明的。这支持了异构查找，从而避免了实例化 `Key` 类型的开销。</class> 215/4280 · 428 Needs editing

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