Domain Modeling Made Functional

Part 2Modeling the Domain

In this second part, we’ll take one workflow from the domain and model it in a functional way. We’ll see how the functional decomposition of a domain differs from an object-oriented approach, and we’ll learn how to use types to capture requirements. By the end of this part, you’ll know how to write concise code that does double-duty: first as readable documentation of the domain but also as a compilable framework that the rest of the implementation can build upon.