Namespace
Varianti

std::array::operator[]

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< cpp‎ | container‎ | array

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C++
 
Contenitori libreria
 
std::array
Membri funzioni
Original:
Member functions
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Elemento accesso
Original:
Element access
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array::at
array::operator[]
array::front
array::back
array::data
Iteratori
Original:
Iterators
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array::begin
array::cbegin
array::end
array::cend
array::rbegin
array::crbegin
array::rend
array::crend
Capacità
Original:
Capacity
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array::empty
array::size
array::max_size
Modificatori
Original:
Modifiers
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array::fill
array::swap
Non membri funzioni
Original:
Non-member functions
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get
swap
Helper classi
Original:
Helper classes
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tuple_size
tuple_element
 
reference       operator[]( size_type pos );
 (dal C++11)
const_reference operator[]( size_type pos ) const;
 (dal C++11)
Restituisce un riferimento per l'elemento in pos posizione specificata. Nessun controllo dei limiti viene eseguito.
Original:
Returns a reference to the element at specified location pos. No bounds checking is performed.
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Indice

[modifica] Parametri

pos -
posizione dell'elemento di ritornare
Original:
position of the element to return
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[modifica] Valore di ritorno

riferimento per l'elemento richiesto
Original:
reference to the requested element
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[modifica] Complessità

Constant
Original:
Constant
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[modifica] Esempio

Il codice seguente utilizza operator[] leggere e scrivere in un 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';
}

Output: 

Second element: 4
All numbers: 5 4 6 8

[modifica] Vedi anche
accedere elemento specificato con verifica dei limiti
Original:
access specified element with bounds checking
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(metodo pubblico) [modifica]
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