In functional programming, this is a big no-no. Mutations are considered a nasty side-effect that should be avoided. The issues that arise from mutation typically have to do with assumptions about ...

One way of doing this in JavaScript is called memoization, which is a functional programming technique used to deal with costly pure functions.

The object-oriented paradigm popularized by languages including Java and C++ has slowly given way to a functional programming approach that is advocated by popular Python libraries and JavaScript ...

Figure 1. Functional JavaScript is available as an ebook (without DRM) from O'Reilly or as a paperback. Anyone who has followed my missives on programming have noted the varied exposure to ...

Callback Functions Callback functions are essential tools in asynchronous programming that allow developers to specify actions that should occur after a task is completed.

Functional programming has been around for the last 60 years, but so far it’s always been a niche phenomenon. Although game-changers like Google rely on its key concepts, the average programmer ...

Javascript has multiple libraries implementing functional paradigms. Rust, a relative newcomer in the systems programming world, boasts many functional features.

Facebook went with a novel programming methodology, called functional programming, to update the News Feed for its Apple iOS client, which helped considerably in tuning and debugging the app ...