std::vector::shrink_to_fit

 

C++

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array (C++11)

vector

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std::vector

Funções de membro 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.

vector::vector

vector::~vector

vector::operator=

vector::assign

vector::get_allocator

acesso. Elemento Original: Element access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

vector::at

vector::operator[]

vector::front

vector::back

vector::data (C++11)

Iteradores Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

vector::begin vector::cbegin (C++11)

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

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

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

Capacidade Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

vector::empty

vector::size

vector::max_size

vector::reserve

vector::capacity

vector::shrink_to_fit (C++11)

Modificadores Original: Modifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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();		(desde C++11)

Pedidos de remoção de capacidade não utilizada.

Original:

Requests the removal of unused capacity.

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É um pedido não vinculativo para reduzir capacity para size. Ele depende da implementação, se a solicitação é atendida.

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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Parâmetros

(Nenhum)

Original:

(none)

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Valor de retorno

(Nenhum)

Original:

(none)

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Complexidade

Constante

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';}

Saída:

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

Veja também

size	devolve o número de elementos 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. (função pública membro)
capacity	retorna o número de elementos que podem ser mantidos em armazenamento atualmente alocado 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. (função pública membro)