std::basic_string::shrink_to_fit – cppreference.com
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(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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Parameter
(None)
Original:
(none)
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Rückgabewert
(None)
Original:
(none)
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Komplexität
Constant
Original:
Constant
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Beispiel
#include <iostream> #include <string> int main() { std::string s; std::cout << "Default-constructed capacity is " << s.capacity() << '\n'; s.resize(100); std::cout << "Capacity of a 100-element string is " << s.capacity() << '\n'; s.clear(); std::cout << "Capacity after clear() is " << s.capacity() << '\n'; s.shrink_to_fit(); std::cout << "Capacity after shrink_to_fit() is " << s.capacity() << '\n'; }
Output:
Default-constructed capacity is 0 Capacity of a 100-element string is 100 Capacity after clear() is 100 Capacity after shrink_to_fit() is 0
Siehe auch
| gibt die Anzahl Zeichen zurück (öffentliche Elementfunktion) [edit] | |
liefert die Anzahl der Zeichen, die in derzeit zugewiesenen Speicher gehalten werden kann Original: returns the number of characters that can be held in currently allocated storage The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |