In this chapter, we learned about object-oriented programming, which is the main essence of any high-level programming language, including C#. We learned about the four pillars of OOP, that is, encapsulation, abstraction, polymorphism, and inheritance, and understood how they help us write applications that are easy to maintain, are scalable, and have a good amount of reuse.
We learned how encapsulation helps us in keeping our code structured by grouping together all the related properties and methods in one class. Then, we learned how abstraction helps us reduce the complexity of a module that is exposed to the entire application. Using abstraction, we can make sure that all the complexities of a class are not exposed to outside classes, which also helps us maintain the application better. We also learned how we can use both runtime and static polymorphism to implement...
