If you find this kind of odd, you’re not alone: while functional programming aims at eliminating side effects completely, object-oriented programming tries to keep them inside objects.

The functional programming paradigm, which has been around for decades, has never gone out of style. In this two-part series, we look at Microsoft's implementation, Visual F#.

Rewrite object-oriented code using functional techniques. Get started with lambdas, method references, functional interfaces, and the Streams API in Java Welcome back to this two-part tutorial ...

In functional programming, there are two varieties of functions: first-order functions and pure functions. First-order functions A first-order function takes standard data types (string, number, ...

Functional programming languages can have objects, but generally those objects are immutable — either arguments or return values to functions.

What is something you wish you knew when you first started functional programming? This question was originally answered on Quora by Tikhon Jelvis.

What does functional programming actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

Scala is an easy transition for those familiar with Java and object-oriented programming. But if you want to learn the basics of functional programming, Scheme is hands-down the best.

OCaml is another popular functional programming language that also supports imperative and object-oriented languages. This allows it to be used by developers more familiar with non-functional ...