Functional Programming

Functional programming is a programming paradigm that treats computation as the evaluation of mathematical functions and avoids changing state or mutable data. In simpler terms, it focuses on writing code as a series of functions that take inputs and produce outputs, much like a math equation. This approach encourages clarity and predictability, making programs easier to test and maintain. Functional programming emphasizes immutability and function reuse, leading to more robust and concise code. Popular languages that support this style include Haskell, Scala, and even JavaScript.