Espacios de nombres
Variantes
Acciones

std::list::empty

De cppreference.com
< cpp‎ | container‎ | list

 
 
 
std::list
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.
list::list
list::~list
list::operator=
list::assign
list::get_allocator
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.
list::front
list::back
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.
list::begin
list::cbegin

(C++11)
list::end
list::cend

(C++11)
list::rbegin
list::crbegin

(C++11)
list::rend
list::crend

(C++11)
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.
list::empty
list::size
list::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.
list::clear
list::insert
list::emplace(C++11)
list::erase
list::push_front
list::emplace_front(C++11)
list::pop_front
list::push_back
list::emplace_back(C++11)
list::pop_back
list::resize
list::swap
Operaciones
Original:
Operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
list::merge
list::splice
list::remove
list::remove_if
list::reverse
list::unique
list::sort
 
bool empty() const;
Comprueba si el contenedor no tiene elementos, es decir, si begin() == end() .
Original:
Checks if the container has no elements, i.e. whether begin() == end().
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

true si el recipiente está vacío, false lo contrario
Original:
true if the container is empty, false otherwise
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Excepciones

noexcept specification:  
noexcept
  (desde C++11)

[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] Ejemplo

El código siguiente utiliza empty para comprobar si un std::list<int> contiene elementos:
Original:
The following code uses empty to check if a std::list<int> contains any elements:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <list>
#include <iostream>
 
int main()
{
    std::list<int> numbers;
    std::cout << "Initially, numbers.empty(): " << numbers.empty() << '\n';
 
    numbers.push_back(42);
    numbers.push_back(13317); 
    std::cout << "After adding elements, numbers.empty(): " << numbers.empty() << '\n';
}

Output:

Initially, numbers.empty(): 1
After adding elements, numbers.empty(): 0

See also

devuelve el número de elementos
Original:
returns the number of elements
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro público función) [edit]