cpp_tests/t21_vector_list_iterator_stability.cpp at master · s-kramer/cpp_tests · GitHub

31 lines (25 loc) · 978 Bytes

#include <iostream>

#include <vector>

#include <list>

/* Note: Always prefer vector to list, unless you have other pointers you need to keep valid at the time of insertion\removal.

* (skramer, Mon 24 Mar 2014 09:19:39 AM CET)

int main()

{

std::vector<int> v = {1, 2, 3, 4, 5, 6};

auto it= v.begin() + 2;

std::cout << "Vector iterator before deletion: " << *it << '\n';

v.erase(v.begin() + 1);

std::cout << "Vector iterator after deletion: " << *it << '\n';

std::list<int> mylist = {1, 2, 3, 4, 5, 6};

std::list<int>::iterator lit1, lit2;

lit1 = lit2 = mylist.begin();

advance(lit1, 1);

advance(lit2, 2);

std::cout << "List iterator 1 before deletion: " << *lit1 << '\n';

std::cout << "List iterator 2 before deletion: " << *lit2 << '\n';

mylist.erase(lit1);

std::cout << "List iterator 1 after deletion: " << *lit1 << '\n';

std::cout << "List iterator 2 after deletion: " << *lit2 << '\n';

return 0;

}

Expand file tree