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// clearing forward_list
#include <iostream>
#include <forward_list>
int main ()
{
std::forward_list<int> mylist = { 10, 20, 30 };
std::cout << "mylist contains:";
for (int& x: mylist) std::cout << ' ' << x;
std::cout << '\n';
mylist.clear();
mylist.insert_after( mylist.before_begin(), {100, 200} );
std::cout << "mylist contains:";
for (int& x: mylist) std::cout << ' ' << x;
std::cout << '\n';
return 0;
}
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