std::vector::shrink_to_fit
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| void shrink_to_fit(); |
(dal C++11) | |
Chiede la rimozione di capacità inutilizzate.
Original:
Requests the removal of unused capacity.
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Si tratta di una richiesta senza impegno per ridurre
capacity a size. Dipende l'applicazione se la richiesta è soddisfatta. Original:
It is a non-binding request to reduce
capacity to size. It depends on the implementation if the request is fulfilled. The text has been machine-translated via Google Translate.
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Indice |
[modifica] Parametri
(Nessuno)
Original:
(none)
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[modifica] Valore di ritorno
(Nessuno)
Original:
(none)
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[modifica] Complessità
Constant
Original:
Constant
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Example
#include <iostream> #include <vector> int main() { std::vector<int> v; std::cout << "Default-constructd capacity is " << v.capacity() << '\n'; v.resize(100); std::cout << "Capacity of a 100-element vector is " << v.capacity() << '\n'; v.clear(); std::cout << "Capacity after clear() is " << v.capacity() << '\n'; v.shrink_to_fit(); std::cout << "Capacity after shrink_to_fit() is " << v.capacity() << '\n'; }
Output:
Default-constructd capacity is 0 Capacity of a 100-element vector is 100 Capacity after clear() is 100 Capacity after shrink_to_fit() is 0
[modifica] Vedi anche
| restituisce il numero di elementi Original: returns the number of elements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) | |
| restituisce il numero di elementi che possono essere tenuti in deposito attualmente assegnate Original: returns the number of elements that can be held in currently allocated storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) | |
