std::get(std::array)

<metanoindex/>

 

C++

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Especificações Técnicas

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Recipientes biblioteca

array (C++11)

vector

deque

forward_list (C++11)

list

set

multiset

map

multimap

unordered_set (C++11)

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std::array

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.

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.

array::at

array::operator[]

array::front

array::back

array::data

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.

array::begin array::cbegin

array::end array::cend

array::rbegin array::crbegin

array::rend array::crend

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.

array::empty

array::size

array::max_size

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.

array::fill

array::swap

Não-membros funções Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

get

swap

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

tuple_size

tuple_element

 

<tbody> </tbody>

template<size_t I, class T, size_t N > T& get( array<T,N>& a );	(1)	(desde C++11)
template<size_t I, class T, size_t N > T&& get( array<T,N>&& a );	(2)	(desde C++11)
template<size_t I, class T, size_t N > const T& get( const array<T,N>& a );	(3)	(desde C++11)

Extrai o elemento elemento Ith da matriz.

Original:

Extracts the Ith element element from the array.

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I deve ser um valor inteiro em [0, N) alcance. Esta é aplicada em tempo de compilação ao invés de at() ou operator[]().

Original:

I must be an integer value in range [0, N). This is enforced at compile time as opposed to at() or operator[]().

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Parâmetros

a

-

matriz cujos conteúdos para extrair Original: array whose contents to extract The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

1)

Referência para o elemento de Ith a.

Original:

Reference to the Ith element of a.

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2)

Rvalue referência para o elemento de Ith a, a menos que o elemento é de lvalue tipo de referência, neste caso, é devolvido lvalue referência.

Original:

Rvalue reference to the Ith element of a, unless the element is of lvalue reference type, in which case lvalue reference is returned.

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3)

Const referência ao elemento Ith de a.

Original:

Const reference to the Ith element of a.

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Exceções

noexcept specification:  

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noexcept

  (desde C++11)

Exemplo

#include <iostream>
#include <array>

int main()
{
    std::array<int, 3> arr;
    
    // set values:
    std::get<0>(arr) = 1;
    std::get<1>(arr) = 2;
    std::get<2>(arr) = 3;
    
    // get values:
    std::cout << "(" << std::get<0>(arr) << ", " << std::get<1>(arr)
              << ", " << std::get<2>(arr) << ")\n";
}

Saída:

(1, 2, 3)

Veja também

operator[]	acessar o elemento especificado Original: access specified element 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)
at	acessar o elemento especificado com verificação de limites Original: access specified element with bounds checking 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)
std::get(std::tuple)	tupla acessa elemento especificado Original: tuple accesses specified element The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função)
std::get(std::pair) (C++11)	acede a um elemento de um pair Original: accesses an element of a pair The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função)