January 2018
Beginner to intermediate
312 pages
7h 22m
English
Content preview from Domain Modeling Made FunctionalBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4Understanding Types
In the second chapter, we captured the domain-driven requirements for a single workflow of the order-taking system. The next challenge is to convert those informal requirements into compilable code.
The approach we are going to take is to represent the requirements using F#’s “algebraic type system.” In this chapter we’ll learn what algebraic types are, how they are defined and used, and how they can represent a domain model. Then, in the next chapter, we’ll use what we’ve learned to accurately model the order-placing workflow.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.