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 ...

JavaScript is a flexible ... if you declare a const and assign it an object, you can change anything you want within the object itself. In functional programming, this is a big no-no. Mutations ...

The following code shows a scenario in JavaScript that uses a pure function created as an anonymous function assigned to the variable payEmployee to facilitate paying an employee. The function takes ...