Object-oriented programming has a lot of well-established design principles, such as the SOLID principles, but when moving towards functional programming many developers don’t know how to use ...

Functional programming has been around for the last 60 years, ... It is useful, however, to know about the basic principles so you can use them to your advantage when appropriate.

LISP was the first functional programming language, followed by Erlang, Scheme, Haskell, OCaml, Scala, Clojure, F# and others. Advertisement THIS DEFINITION IS FOR PERSONAL USE ONLY.

Variables defined with let are immutable by default, which is consistent with functional programming principles. let result = 1 + 1. However, you can explicitly make a variable mutable.

In functional programming languages, you have first-class functions ... Scheme is a dead simple language based on two principles: Every expression is either an atom or a list.