Modern C++ Programming Cookbook

Getting ready

Make sure you read the previous recipe, Using unique_ptr to uniquely own a memory resource, to become familiar with how unique_ptr and make_unique() work. We will use the foo, foo_deleter, Base, and Derived classes defined in this recipe and also make several references to it.

Both the shared_ptr and weak_ptr classes, as well as the make_shared() function template, are available in the std namespace in the <memory> header. 

For simplicity and readability, we will not use in this recipe the fully qualified names std::unique_ptr, std::shared_ptr, std::weak_pointer but unique_ptr, shared_ptr and weak_ptr.