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  1. #include <algorithm>
  2. #include <functional>
  3. #include <iostream>
  4. #include <memory>
  5. #include <string>
  6. #include <type_traits>
  7. #include <utility>
  8.  
  9. namespace A {
  10. 	namespace B {
  11. 		namespace C {
  12. 			namespace D {
  13. 				template <class T>
  14. 				struct point_xy { T x, y; point_xy(T x, T y) : x(x), y(y) {} };
  15. 			}
  16. 		}
  17. 	}
  18. }
  19.  
  20. typedef A::B::C::D::point_xy<long> Point;
  21. typedef std::pair<Point, Point> Vector;
  22.  
  23.  namespace A { namespace B { namespace C { namespace D {
  24. bool operator==(const Point& p1, const Point& p2) {
  25.   return p1.x== p2.x && p1.y== p2.y;
  26. }
  27.  } } } }
  28.  
  29. int main() {
  30.     Vector vec1(Point(0,0), Point(1,1));
  31.     Vector vec2(Point(0,0), Point(1,2));
  32.     std::cout << ((vec1 == vec2) == false) << std::endl;
  33.     std::cout << ((vec1 == vec1) == true) << std::endl;
  34. }
  35.  
Success #stdin #stdout 0s 3296KB
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https://ideone.com/lPs4w0
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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