std::deque<T,Allocator>::pop_back

 

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void pop_back();

Removes the last element of the container.

Calling pop_back on an empty container results in undefined behavior.

Iterators and references to the erased element are invalidated. The end() iterator is also invalidated. Other references and iterators are not affected.

Parameters

(none)

Return value

(none)

Complexity

Constant.

Exceptions

Throws nothing.

Example

Run this code

#include <deque>
#include <iostream>
 
template<typename T>
void print(T const & xs)
{
    std::cout << "[ ";
    for(auto const& x : xs)
        std::cout << x << ' ';
    std::cout << "]\n";
}
 
int main()
{
    std::deque<int> numbers;
 
    print(numbers);
 
    numbers.push_back(5);
    numbers.push_back(3);
    numbers.push_back(4);
 
    print(numbers);
 
    numbers.pop_back();
 
    print(numbers);
}

Output:

[ ]
[ 5 3 4 ]
[ 5 3 ]

See also

pop_front	removes the first element (public member function)
push_back	adds an element to the end (public member function)