Functional programming is a programming paradigm, just like object-oriented programming (OOP) or procedural programming. The definition of functional programming says, functional programming is a programming system that relies on structuring the program as the evaluation of mathematical functions with immutable data, and it avoids state-change.
Just as OOP requires you to model your program like real-life objects (such as trees, birds, and so on), functional programming requires you to distribute your program into small pieces of code, making it modular and non-complex. Just like OOP, functional programming encourages code reusability and abstraction. In many functional programming experts' opinions, functional programming is a more efficient evolution of OOP. So, it's better to consider functional programming not as contradictory to...