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std::deque::back

Da cppreference.com.
< cpp‎ | container‎ | deque

 
 
 
std :: deque
Membri funzioni
Original:
Member functions
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deque::deque
deque::~deque
deque::operator=
deque::assign
deque::get_allocator
Elemento accesso
Original:
Element access
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deque::front
deque::back
Iteratori
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)
Capacità
Original:
Capacity
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deque::empty
deque::size
deque::max_size
deque::shrink_to_fit
Modificatori
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;
Restituisce riferimento l'ultimo elemento nel contenitore.
Original:
Returns reference to the last element in the container.
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Chiamare back su un contenitore vuoto non è definito.
Original:
Calling back on an empty container is undefined.
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Indice

[modifica] Parametri

(Nessuno)
Original:
(none)
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[modifica] Valore di ritorno

riferimento all'ultimo elemento
Original:
reference to the last element
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[modifica] Complessità

Constant
Original:
Constant
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[modifica] Note

Per un c contenitore, il return c.back(); espressione è 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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[modifica] Esempio

Il codice seguente utilizza back per visualizzare l'ultimo elemento di una 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

[modifica] Vedi anche

accedere al primo elemento
Original:
access the first element
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(membro pubblico funzione) [edit]