Chapter 20 // Exercise 17 - Principles & Practice Using C++

In this exercise I am using Visual Studio 2019 and a modified version of the std_lib_facilities header found here.

Chapter 20 // Exercise 17

Define an ownership_vector that holds pointers to objects like pvector but provides a mechanism for the user to decide which objects are owned by the vector (i.e., which objects are deleted by the destructor). Hint: This exercise is simple if you were awake for Chapter 13.

Github: https://github.com/l-paz91/principles-practice/blob/master/Chapter%2020/Exercise%2017

I had to go back and refresh my memory on what Chapter 13 was. It was one of the graphics chapters and I immediately remembered vector_ref. Here Bjarne uses two vectors as member variables. They both hold pointers to objects but one deletes objects when destroyed. Vector_ref is introduced on page 465 in section 13.10. There is also more information in Appendix E on page 1212.

For this I removed some constructors that didn't make sense and when I thought about it, most methods in std::vector didn't really fit having two vectors as members so I deleted them.