Learn how JavaScript’s built-in functions like map () and filter (), as well as compose () and chain (), support a more elegant handling of JavaScript arrays.

JavaScript’s Map and Set are indispensable tools in a developer’s toolkit, offering powerful ways to manage data. The Map structure provides a flexible means of associating values with unique ...

Notice that the core arrow operator syntax is virtually identical to JavaScript, and they do the same thing, i.e., create a function that accepts arguments, performs logic, and returns a value.