Mastering JavaScript Functional Programming - Second Edition

What FP is not

Since we have been saying some things about what FP is, let's also clear up some common misconceptions, and look at what FP is not:

• FP isn't just an academic ivory tower thing: It is true that the lambda calculus upon which it is based was developed by Alonzo Church in 1936 as a tool to prove an important result in theoretical computer science (which preceded modern computer languages by more than 20 years!); however, FP languages are being used today for all kinds of systems.
• FP isn't the opposite of object-oriented programming (OOP): It isn't a case of choosing declarative or imperative ways of programming. You can mix and match as best suits you, and we'll be doing this throughout this book, bringing together the best of ...