As a programmer, you probably want to write elegant, maintainable, scalable, predictable code. The principles of functional programming, or FP, can significantly aid in these goals. Functional programming is a paradigm, or style, that values immutability, first-class functions, referential transparency, and pure functions. If none of those words makes sense to you, don’t worry! We’re going to break down all this terminology in this article. Functional programming evolved from lambda calculus, a mathematical system built around function abstraction and generalization.…