Extending your objects with the decorator pattern

In this recipe, we will learn how to implement the decorator pattern, which provides the ability to extend the functionality of a class without the need for inheritance, which by design is static in nature. This recipe is important because inheritance doesn't support the ability to extend a class at runtime, a problem the decorator pattern addresses.

Getting ready

Before beginning, please ensure that all of the technical requirements are met, including installing Ubuntu 18.04 or higher and running the following in a Terminal window:

> sudo apt-get install build-essential git cmake

This will ensure your operating system has the proper tools to compile and execute the...