Functional Programming Patterns in Scala and Clojure

Introduction

Object-oriented patterns are a staple of modern software engineering. In this chapter, we’ll take a look at some of the most common ones and the problems they solve. Then we’ll introduce more functional solutions that solve the same sorts of problems that the object-oriented patterns solve.

For each pattern that we introduce, we’ll first look at it in Java. Then we’ll look at a Scala approach that solves the same problems, and finally we’ll wrap up with a look at a Clojure version that does as well.

Sometimes the Scala and Clojure replacements will be quite similar. For instance, the Scala and Clojure solutions in both Pattern 1, ​Replacing Functional Interface​, and Pattern 7, ​Replacing Strategy​, are largely the same. Other ...