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

English

Effects:;; If the container does not already contain an element with a key equivalent to `k`, inserts the value `std::pair<key_type const, mapped_type>(k, mapped_type())`. Returns:;; A reference to `x.second` where `x` is the element already in the container, or the newly inserted element with a key equivalent to `k`. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load. + + 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.

336 :1312
	English Returns:;; An iterator pointing to an element with key equivalent to `k`, or `end()` if no such element exists. Notes:;; 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` 等价的元素的迭代器；如果不存在这样的元素，则返回 `end()`。注意：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时使用 `K` 和 `Key` 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` 类型对象的开销。</class> 236/4780 · 478 Needs editing
:1315 :1315
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
338 :1317
	English count
	Chinese (Simplified Han script) count 5/100 · 5 Needs editing
339 :1318
	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
340 :1325
	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` 等价的元素数量。注意：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时使用 `K` 和 `Key` 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` 类型对象的开销。</class> 209/4280 · 428 Needs editing
:1328 :1328
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
342 :1330
	English contains
	Chinese (Simplified Han script) 包含 2/100 · 8 Needs editing
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	English ```c++ bool contains(const key_type& k) const; template<class K> bool contains(const K& k) const; ```
	Chinese (Simplified Han script) ```c++ bool contains(const key_type& k) const; template<class k=""> bool contains(const K& k) const; ```</class> 142/1230 · 123 Needs editing
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	English Returns:;; A boolean indicating whether or not there is an element with key equal to `key` in the container 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：一个布尔值，指示容器中是否存在键等于 `key` 的元素。注意：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时使用 `K` 和 `Key` 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` 类型对象的开销。</class> 223/4740 · 474 Needs editing
:1341 :1341
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
346 :1343
	English equal_range
	Chinese (Simplified Han script) equal_range 11/110 · 11 Needs editing
347 :1344
	English ```c++ std::pair<iterator, iterator> equal_range(const key_type& k); std::pair<const_iterator, const_iterator> equal_range(const key_type& k) const; template<class K> std::pair<iterator, iterator> equal_range(const K& k); template<class K> std::pair<const_iterator, const_iterator> equal_range(const K& k) const; ```
	Chinese (Simplified Han script) ```c++ std::pair<iterator, iterator=""> equal_range(const key_type& k); std::pair<const_iterator, const_iterator=""> equal_range(const key_type& k) const; template<class k=""> std::pair<iterator, iterator=""> equal_range(const K& k); template<class k=""> std::pair<const_iterator, const_iterator=""> equal_range(const K& k) const; ```</const_iterator,></class></iterator,></class></const_iterator,></iterator,> 454/3440 · 344 Needs editing
348 :1354
	English Returns:;; A range containing all elements with key equivalent to `k`. If the container doesn't contain any such elements, returns `std::make_pair(b.end(), b.end())`. Notes:;; 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：包含所有键与 `k` 等价的元素的范围。如果容器不包含任何此类元素，则返回 `std::make_pair(b.end(), b.end())`。注意：`template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时使用 `K` 和 `Key` 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` 类型对象的开销。</class> 267/5330 · 533 Needs editing
:1357 :1357
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
350 :1359
	English operator++[++++]++
	Chinese (Simplified Han script) operator++[++++]++ 18/180 · 18 Needs editing
351 :1360
	English ```c++ mapped_type& operator[](const key_type& k); mapped_type& operator[](key_type&& k); template<class K> mapped_type& operator[](K&& k); ```
	Chinese (Simplified Han script) ```c++ mapped_type& operator[](const key_type& k); mapped_type& operator[](key_type&& k); template<class k=""> mapped_type& operator[](K&& k); ```</class> 186/1430 · 143 Needs editing
352 :1367
	English Effects:;; If the container does not already contain an element with a key equivalent to `k`, inserts the value `std::pair<key_type const, mapped_type>(k, mapped_type())`. Returns:;; A reference to `x.second` where `x` is the element already in the container, or the newly inserted element with a key equivalent to `k`. Throws:;; If an exception is thrown by an operation other than a call to `hasher` the function has no effect. Notes:;; Can invalidate iterators, but only if the insert causes the load to be greater than the maximum load. + + 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) 效果：如果容器中不存在键与 `k` 等价的元素，则插入值 `std::pair<key_type const,="" mapped_type="">(k, mapped_type())`。返回：对 `x.second` 的引用，其中 `x` 是容器中已存在的元素，或是新插入的键与 `k` 等价的元素。抛出：如果除调用 `hasher` 之外的操作抛出异常，则该函数无效果。注意：可能使迭代器失效，但仅当插入导致负载大于最大负载时才会发生。 `template<class k="">` 重载仅在 `Hash::is_transparent` 和 `Pred::is_transparent` 是有效的成员 typedef 时参与重载决议。库假定 `Hash` 可同时使用 `K` 和 `Key` 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` 类型对象的开销。</class></key_type> 429/9020 · 902 Needs editing
:1374 :1374
	English ---
	Chinese (Simplified Han script) --- 3/100 · 3 Needs editing
354 :1376
	English at
	Chinese (Simplified Han script) at 2/100 · 2 Needs editing
355 :1377
	English ```c++ mapped_type& at(const key_type& k); const mapped_type& at(const key_type& k) const; template<class K> mapped_type& at(const K& k); template<class K> const mapped_type& at(const K& k) const; ```
	Chinese (Simplified Han script) ```c++ mapped_type& at(const key_type& k); const mapped_type& at(const key_type& k) const; template<class k=""> mapped_type& at(const K& k); template<class k=""> const mapped_type& at(const K& k) const; ```</class></class> 254/2000 · 200 Needs editing

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