std::unordered_multimap::operator=
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< cpp | container | unordered multimap
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| unordered_multimap& operator=( const unordered_multimap& other ); |
(1) | (dal C++11) |
| unordered_multimap& operator=( unordered_multimap&& other ); |
(2) | (dal C++11) |
Sostituisce il contenuto del contenitore.
1) Original:
Replaces the contents of the container.
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Copia operatore di assegnazione. Sostituisce il contenuto con una copia del contenuto di
2) other.Original:
Copy assignment operator. Replaces the contents with a copy of the contents of
other.The text has been machine-translated via Google Translate.
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Spostare operatore di assegnazione. Sostituisce il contenuto con quelli della
other usando la semantica spostamento (cioè i dati in other viene spostato da other in questo contenitore). other è in stato valido, ma non specificato in seguito.Original:
Move assignment operator. Replaces the contents with those of
other using move semantics (i.e. the data in other is moved from other into this container). other is in valid, but unspecified state afterwards.The text has been machine-translated via Google Translate.
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Indice |
[modifica] Parametri
| other | - | un altro contenitore per essere utilizzato come sorgente
Original: another container to be used as source The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[modifica] Valore di ritorno
*this
[modifica] Complessità
1)Lineare nella dimensione del contenitore.
2) Original:
Linear in the size of the container.
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Costante.
Original:
Constant.
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[modifica] Esempio
Il codice seguente utilizza
Original:
The following code uses
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#include <unordered_map> #include <iostream> void display_sizes(const std::unordered_multimap<int, int> &nums1, const std::unordered_multimap<int, int> &nums2, const std::unordered_multimap<int, int> &nums3) { std::cout << "nums1: " << nums1.size() << " nums2: " << nums2.size() << " nums3: " << nums3.size() << '\n'; } int main() { std::unordered_multimap<int, int> nums1 {{3, 1}, {4, 1}, {5, 9}}; std::unordered_multimap<int, int> nums2; std::unordered_multimap<int, int> nums3; std::cout << "Initially:\n"; display_sizes(nums1, nums2, nums3); // copy assignment copies data from nums1 to nums2 nums2 = nums1; std::cout << "After assigment:\n"; display_sizes(nums1, nums2, nums3); // move assignment moves data from nums1 to nums3, // modifying both nums1 and nums3 nums3 = std::move(nums1); std::cout << "After move assigment:\n"; display_sizes(nums1, nums2, nums3); }
Output:
Initially: nums1: 4 nums2: 0 nums3: 0 After assigment: nums1: 4 nums2: 4 nums3: 0 After move assigment: nums1: 0 nums2: 4 nums3: 4
[modifica] Vedi anche
costruisce il unordered_multimap (metodo pubblico) | |
