Summary

In this chapter, we have demystified a lot of programming concepts in a quick refresher. We also started learning about our first design pattern, the Singleton, which is intended to allow us to always have access to a class's functions and variables due to the fact that there will only ever be one of these objects.

We discussed some of the typical downfalls of using the Singleton pattern, such as the possibility that objects could have multiple copies of them in the future, even if this is unlikely.

We learned about three different kinds of method for creating Singletons, starting off with the Singleton, then extending it and templating parts of it to create the curiously reoccurring template pattern, and then we saw a final all-static version of getting the same effect with minimal hassle.

Each of these methods has their own pros and cons, and we hope that you use them effectively, where they are relevant. Now that we've touched on the design pattern everyone is familiar with, we can...