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std::deque::back

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< cpp‎ | container‎ | deque

 
 
 
std :: deque
Funções de membro
Original:
Member functions
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deque::deque
deque::~deque
deque::operator=
deque::assign
deque::get_allocator
acesso. Elemento
Original:
Element access
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deque::front
deque::back
Iteradores
Original:
Iterators
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deque::begin
deque::cbegin

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

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

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

(C++11)
Capacidade
Original:
Capacity
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deque::empty
deque::size
deque::max_size
deque::shrink_to_fit
Modificadores
Original:
Modifiers
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deque::clear
deque::insert
deque::emplace
deque::erase
deque::push_front
deque::emplace_front
deque::pop_front
deque::push_back
deque::emplace_back
deque::pop_back
deque::resize
deque::swap
 
reference back();
const_reference back() const;
Retorna referência ao último elemento do recipiente.
Original:
Returns reference to the last element in the container.
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Chamando back em um recipiente vazio é indefinido.
Original:
Calling back on an empty container is undefined.
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Índice

[editar] Parâmetros

(Nenhum)
Original:
(none)
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[editar] Valor de retorno

referência para o último elemento
Original:
reference to the last element
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[editar] Complexidade

Constante
Original:
Constant
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[editar] Notas

Para uma c recipiente, o return c.back(); expressão é equivalente a { auto tmp = c.end(); --tmp; return *tmp; }
Original:
For a container c, the expression return c.back(); is equivalent to { auto tmp = c.end(); --tmp; return *tmp; }
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[editar] Exemplo

O código a seguir usa back para exibir o último elemento de uma std::deque<char>:
Original:
The following code uses back to display the last element of a std::deque<char>:
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#include <deque>
#include <iostream>
 
int main()
{
    std::deque<char> letters {'o', 'm', 'g', 'w', 't', 'f'};
 
    if (!letters.empty()) {
        std::cout << "The last character is: " << letters.back() << '\n';
    }  
}

Output:

The last character is f

[editar] Veja também

acesso ao primeiro elemento
Original:
access the first element
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(função pública membro) [edit]