Welcome back to this two-part tutorial introducing functional programming in a Java context. In Functional programming for Java developers, Part 1, I used JavaScript examples to get you started ...

You see, we don’t get functional programming by starting with an imperative language and cutting off its legs. A purely functional subset of Java or C or Python would be miserable little languages.

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 ...

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, ...

Purely functional programming is a brilliant idea with a misleading name. When people talk about “purely functional programming”, they mean Haskell or something like Haskell.

In-Depth Functional Programming, the .NET Way, Part 2 We looked at the basic features of functional programming with Visual F#. In this second part, we take it a bit farther and look at creating ...

Some of the most anticipated updates featured in new versions of imperative languages are those inspired by functional programming. In the end, Backus’ anti–von Neumann plea was heard.

Functional programming has “increased our reliability in a really big way,” said Adam Ernst, an engineer based at Facebook’s New York office, who oversaw the effort to rebuild the News Feed ...

Java 8 introduced Java developers to functional programming with lambda expressions. This Java release effectively notified developers that it’s no longer sufficient to think about Java ...