NAME¶

std::deque::pop_back - std::deque::pop_back

Synopsis¶

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. It is
unspecified whether the past-the-end iterator is invalidated. Other (until C++11)
references and iterators are not affected.
Iterators and references to the erased element are invalidated. The
past-the-end iterator is also invalidated. Other references and (since C++11)
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)