Class SquareNoncopyable

test/te.cpp:171–180

};

struct SquareNoncopyable {
  SquareNoncopyable() = default;
  SquareNoncopyable(const SquareNoncopyable &) = delete;
  SquareNoncopyable &operator=(const SquareNoncopyable &) = delete;
  SquareNoncopyable(SquareNoncopyable &&) = default;
  SquareNoncopyable &operator=(SquareNoncopyable &&) = default;
  ~SquareNoncopyable() noexcept = default;

  void draw(std::ostream &out) const { out << "Square"; }
};

struct TriangleCopyable {
  void draw(std::ostream &out) const { out << "Triangle"; }