Beginning Haskell: A Project-Based Approach

CHAPTER 16

Architecting Your Application

In a programming book you usually learn a new language via brief examples. Alas, real applications are usually much bigger than ten or twenty lines and need further work in designing, maintaining, and refactoring their code. This chapter tries to bridge the gap between those two worlds by offering a set of guidelines. Of course, this advice is not carved in stone, but it can give you a good idea of how to use functional programming.

First I’ll compare how design patterns are applied in object-oriented programming and how you can use them in the functional realm. As you’ll see, the gap is not so wide, and ...