typedef CGAL::Simple_cartesian<double> Kernel;

typedef Kernel::Point_2 Point_2;

typedef Kernel::Segment_2 Segment_2;

typedef Kernel::Circle_2 Circle_2;

typedef CGAL::Weighted_point<Point_2,Kernel::FT> Weighted_point;

typedef CGAL::Polygon_2<Kernel> Polygon_2;

int main(int, char*[])

{

std::list<Point_2> pt_list;

std::list<Segment_2> sg_list;

sg_list.push_back(Segment_2(Point_2(0,0),Point_2(1,1)));

sg_list.push_back(Segment_2(Point_2(0,1),Point_2(1,2)));

std::copy(sg_list.begin(), sg_list.end(),CGAL::internal::point_grabber<Kernel>(std::back_inserter(pt_list)));

assert (pt_list.size()==4);

std::list<Polygon_2> pol_list;

pol_list.push_back(Polygon_2(pt_list.begin(),pt_list.end()));

pol_list.push_back(Polygon_2(pt_list.begin(),pt_list.end()));

std::copy(pol_list.begin(), pol_list.end(),CGAL::internal::point_grabber<Kernel>(std::back_inserter(pt_list)));

assert (pt_list.size()==12);

std::copy(pol_list.begin(), pol_list.end(),CGAL::internal::segment_grabber<Kernel>(std::back_inserter(sg_list)));

assert (sg_list.size()==10);

std::list<Circle_2> l_cir;

l_cir.push_back( Circle_2(Point_2(0,0),4) );

std::list<Weighted_point> l_wp;

std::copy(l_cir.begin(), l_cir.end(),CGAL::internal::wpoint_grabber<Kernel>(std::back_inserter(l_wp)));

std::copy(pt_list.begin(), pt_list.end(),CGAL::internal::wpoint_grabber<Kernel>(std::back_inserter(l_wp)));

assert (l_wp.size()==13);

return 0;

}