Mastering Functional Programming

The structure of the library

The library consists of the top-level package and its subpackages. The top-level package is called cats and is a location where basic type classes are defined:

Apart from that, there are several subpackages present in the top-level package. The most important ones are instances, data, and syntax.

The instances package contains the implementations of the type classes for basic data types that are present in the language core and the ones defined by the Cats library. Finally, data types that are frequently encountered and absent from the language core are defined under the data package.

We will now take a look at ...