Using the Singleton Pattern

This chapter will continue our goal to expand your C++ programming skills beyond core OOP concepts, with the objective of empowering you to solve recurring types of coding conundrums utilizing core design patterns. Utilizing design patterns in coding solutions can not only provide refined solutions but also contribute to easier code maintenance and provide potential opportunities for code reuse.

The next core design pattern that we will learn how to implement effectively in C++ is the Singleton pattern.

In this chapter, we will cover the following main topics:

• Understanding the Singleton pattern and how it contributes to OOP
• Implementing the Singleton pattern in C++ (with simple techniques versus a paired-class approach), and using a registry to allow many classes to utilize the Singleton pattern

By the end of this chapter, you will understand the Singleton pattern and how it can be used to ensure that only a single instance of a...