Mastering Functional Programming

Data

Let us now discuss the data package, which is another package you will use a lot in daily functional programming with Cats:

Previously, we discussed that the main utility of having a library such as cat is to abstract away the common type classes for functional programming. We have also seen that not only do the type classes get abstracted, but also all of the various kinds of supporting stuff to use them in practice efficiently. This supporting stuff includes the mechanism for syntax injection and the default implementations for commonly encountered effect types.

A final piece of the supporting infrastructure that cats provides is a ...