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std::array::operator[] - cppreference.com

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`reference operator[]( size_type pos );`		(desde C++11)

`const_reference operator[]( size_type pos ) const;`		(desde C++11)

Devolve uma referência para o elemento em pos local especificado. Nenhuma verificação de limites é realizado.

Original:

Returns a reference to the element at specified location pos. No bounds checking is performed.

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Parâmetros

pos

-

posição do elemento de voltar

Original:

position of the element to return

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Valor de retorno

referência ao elemento solicitado

Original:

reference to the requested element

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Complexidade

Constante

Original:

Constant

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Exemplo

O código a seguir usa operator[] ler e escrever para um std::array<int>:

Original:

The following code uses operator[] read from and write to a std::array<int>:

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#include <array>
#include <iostream>
 
int main()
{
    std::array<int> numbers {2, 4, 6, 8};

    std::cout << "Second element: " << numbers[1] << '\n';

    numbers[0] = 5;

    std::cout << "All numbers:";
    for (auto i : numbers) {
        std::cout << ' ' << i;
    }
    std::cout << '\n';
}

Saída:

Second element: 4
All numbers: 5 4 6 8

Veja também


	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) [edit]