1 #include "Dimension.hh"

     2 

     3 std::ostream& operator<< (std::ostream &s, const Coordinate &c) {

     4     s << "(" << c.x << ", " << c.y << ")";

     5 

     6     return s;

     7 }

     8 

     9 std::ostream& operator<< (std::ostream &s, const PositionDelta &c) {

    10     s << "(" << c.dx << ", " << c.dy << ")";

    11 

    12     return s;

    13 }

    14