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std::array::operator[]

De cppreference.com
< cpp‎ | container‎ | array

 
 
 
std::array
Las funciones miembro
Original:
Member functions
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Elemento acceso
Original:
Element access
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array::at
array::operator[]
array::front
array::back
array::data
Los iteradores
Original:
Iterators
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array::begin
array::cbegin
array::end
array::cend
array::rbegin
array::crbegin
array::rend
array::crend
Capacidad
Original:
Capacity
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array::empty
array::size
array::max_size
Modificadores
Original:
Modifiers
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array::fill
array::swap
Terceros funciones
Original:
Non-member functions
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get
swap
Clases de ayuda
Original:
Helper classes
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tuple_size
tuple_element
 
reference       operator[]( size_type pos );
(desde C++11)
const_reference operator[]( size_type pos ) const;
(desde C++11)
Devuelve una referencia al elemento en pos ubicación especificada. Sin comprobación de límites se realiza .
Original:
Returns a reference to the element at specified location pos. No bounds checking is performed.
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Contenido

[editar] Parámetros

pos -
la posición del elemento para volver
Original:
position of the element to return
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[editar] Valor de retorno

referencia para el elemento solicitado
Original:
reference to the requested element
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[editar] Complejidad

Constant
Original:
Constant
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[editar] Ejemplo

El código siguiente utiliza operator[] leer y escribir en 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

[editar] Ver también

acceder al elemento especificado con comprobación de límites
Original:
access specified element with bounds checking
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(miembro público función) [edit]