C++17 STL Cookbook

How it works...

In this section, we first created a shared pointer that manages a dynamically allocated person object. Then we made two other smart pointers point to the person object, but they both did not directly point to the person object itself but instead to its members, name and age.

To summarize what kind of scenario we just created, let's have a look at the following diagram:

Note that shared_ptr1 points to the person object directly, while shared_name and shared_age point to the name and the age members of the same object. Apparently, they still manage the object's entire lifetime. This is possible because the internal control block ...