Espacios de nombres
Variantes
Acciones

std::array::front

De cppreference.com
< cpp‎ | container‎ | array

 
 
 
std::array
Las funciones miembro
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.
Elemento acceso
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
Los 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
Capacidad
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
Terceros funciones
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
Clases de ayuda
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
 
reference front();
(desde C++11)
const_reference front() const;
(desde C++11)
Devuelve una referencia al primer elemento en el recipiente .
Original:
Returns a reference to the first element in the container.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Llamar a front en un recipiente vacío es indefinido .
Original:
Calling front on an empty container is undefined.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Contenido

[editar] Parámetros

(Ninguno)
Original:
(none)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Valor de retorno

referencia al primer elemento
Original:
reference to the first element
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Complejidad

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

[editar] Notas

Para una c contenedor, el c.front() expresión es equivalente a *c.begin() .
Original:
For a container c, the expression c.front() is equivalent to *c.begin().
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Ejemplo

El código siguiente utiliza front para mostrar el primer elemento de una std::array<char>:
Original:
The following code uses front to display the first element of a std::array<char>:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <array>
#include <iostream>
 
int main()
{
    std::array<char> letters {'o', 'm', 'g', 'w', 't', 'f'};
 
    if (!letters.empty()) {
        std::cout << "The first character is: " << letters.front() << '\n';
    }  
}

Output:

The first character is o

See also

access the last element
(miembro público función) [edit]