Namespace
Varianti

std::vector::shrink_to_fit

Da cppreference.com.
< cpp‎ | container‎ | vector

 
 
 
std::vector
Membri funzioni
Original:
Member functions
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vector::vector
vector::~vector
vector::operator=
vector::assign
vector::get_allocator
Elemento accesso
Original:
Element access
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vector::at
vector::operator[]
vector::front
vector::back
vector::data(C++11)
Iteratori
Original:
Iterators
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vector::begin
vector::cbegin

(C++11)
vector::end
vector::cend

(C++11)
vector::rbegin
vector::crbegin

(C++11)
vector::rend
vector::crend

(C++11)
Capacità
Original:
Capacity
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vector::empty
vector::size
vector::max_size
vector::reserve
vector::capacity
vector::shrink_to_fit(C++11)
Modificatori
Original:
Modifiers
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vector::clear
vector::insert
vector::emplace(C++11)
vector::erase
vector::push_back
vector::emplace_back(C++11)
vector::pop_back
vector::resize
vector::swap
 
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.
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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
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(membro pubblico funzione) [edit]
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
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(membro pubblico funzione) [edit]