Functional Programming and Recursion

Ever wonder why programming languages such as Haskell , Scala , JavaScript , etc are so in demand nowadays? This is because these languages are based on Functional Programming , meaning the system is built around the concept of recursion.

Please explain further what you mean by “FP is built around the concept of recursion”. It’s so freaking annoying when you slip in incomprehensible one-liners like this all over the place without any explanation whatsoever.