std::vector::shrink_to_fit

 

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std::vector

Member-Funktionen Original: Member functions 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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Kapazität Original: Capacity 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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vector::shrink_to_fit (C++11)

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void shrink_to_fit();		(seit C++11)

Fordert die Beseitigung von ungenutzten Kapazitäten .

Original:

Requests the removal of unused capacity.

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Es ist eine unverbindliche Anfrage an capacity um size reduzieren. Es hängt von der Implementierung, wenn die Anforderung erfüllt ist .

Original:

It is a non-binding request to reduce capacity to size. It depends on the implementation if the request is fulfilled.

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(None)

Original:

(none)

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(None)

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(none)

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Komplexität

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

Siehe auch

size	liefert die Anzahl der Elemente 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. (öffentliche Elementfunktion)
capacity	gibt die Anzahl der Elemente, die in derzeit zugewiesenen Speicher gehalten werden kann 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. (öffentliche Elementfunktion)