C++ Patterns12345678910111213141516171819202122232425262728293031323334 #include <memory> class bar; class foo { public: foo(const std::shared_ptr<bar>& b) : forward_reference{b} { } private: std::shared_ptr<bar> forward_reference; }; class bar { public: void set_back_reference(const std::weak_ptr<foo>& f) { this->back_reference = f; } void do_something() { std::shared_ptr<foo> shared_back_reference = this->b
