std::unordered_map::emplace_hint
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< cpp | container | unordered map
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| template <class... Args> iterator emplace_hint( const_iterator hint, Args&&... args ); |
(C + + 11以来) | |
挿入コンテナに新しい要素、要素は行くべき提案として
hintを使用しています。要素はその場で構成され、操作が実行されないコピーや移動、すなわちません。 The constructor of the element type (value_type, that is, std::pair<const Key, T>) is called with exactly the same arguments as supplied to the function, forwarded with std::forward<Args>(args)....Original:
Inserts a new element to the container, using
hint as a suggestion where the element should go. The element is constructed in-place, i.e. no copy or move operations are performed. The constructor of the element type (value_type, that is, std::pair<const Key, T>) is called with exactly the same arguments as supplied to the function, forwarded with std::forward<Args>(args)....The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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If rehashing occurs due to the insertion, all iterators are invalidated. Otherwise iterators are not affected. References are not invalidated. Rehashing occurs only if the new number of elements is higher than max_load_factor()*bucket_count().
目次 |
[編集] パラメータ
| hint | - | 新しい要素を挿入する場所についての提案として使用されるイテレータ
Original: iterator, used as a suggestion as to where to insert the new element The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| args | - | 要素のコンストラクタに転送するための引数
Original: arguments to forward to the constructor of the element The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[編集] 値を返します
新しく挿入された要素を指すイテレータを返す.
Original:
Returns an iterator to the newly inserted element.
The text has been machine-translated via Google Translate.
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If the insertion failed because the element already exists, returns an iterator to the already existing element with the equivalent key.
[編集] 複雑
Amortized constant on average, worst case linear in the size of the container.
[編集] も参照してください
| constructs element in-place (パブリックメンバ関数) | |
| 要素を挿入します (パブリックメンバ関数) | |
