public member function
<list>

std::list::pop_back

void pop_back();
Delete last element
Removes the last element in the list container, effectively reducing the container size by one.

This destroys the removed element.

Parameters

none

Return value

none

Example

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// list::pop_back
#include <iostream>
#include <list>

int main ()
{
  std::list<int> mylist;
  int sum (0);
  mylist.push_back (100);
  mylist.push_back (200);
  mylist.push_back (300);

  while (!mylist.empty())
  {
    sum+=mylist.back();
    mylist.pop_back();
  }

  std::cout << "The elements of mylist summed " << sum << '\n';

  return 0;
}

In this example, the elements are popped out from the end of the list after they are added up in the sum. Output:
The elements of mylist summed 600

Complexity

Constant.

Iterator validity

Iterators, pointers and references referring to element removed by the function are invalidated.
All other iterators, pointers and reference keep their validity.

Data races

The container is modified.
The last element is modified. Concurrently accessing or modifying other elements is safe.

Exception safety

If the container is not empty, the function never throws exceptions (no-throw guarantee).
Otherwise, it causes undefined behavior.

See also

  • 997351548 2018-02-20
  • 903691547 2018-02-20
  • 9127171546 2018-02-20
  • 2234751545 2018-02-20
  • 1685381544 2018-02-20
  • 911091543 2018-02-20
  • 9281021542 2018-02-20
  • 632231541 2018-02-20
  • 9751491540 2018-02-20
  • 8333621539 2018-02-20
  • 995001538 2018-02-20
  • 6477441537 2018-02-20
  • 511981536 2018-02-19
  • 2072881535 2018-02-19
  • 6024461534 2018-02-19
  • 7594061533 2018-02-19
  • 9311341532 2018-02-19
  • 4928331531 2018-02-19
  • 38561530 2018-02-19
  • 7776611529 2018-02-19