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 ...

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 ...

So far, the concepts we’ve covered do little to indicate how powerful the basic building blocks of functional programming are when combined. In this post, we’ll examine how functions alone can ...

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 ...

Asynchronous programming in JavaScript leverages features like callbacks, promises and async/await to sidestep this issue by allowing other code to run in the meantime.