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Clojure for Java Developers

Clojure for Java Developers

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Clojure for Java Developers

Clojure for Java Developers

Overview of this book

We have reached a point where machines are not getting much faster, software projects need to be delivered quickly, and high quality in software is more demanding as ever. We need to explore new ways of writing software that helps achieve those goals. Clojure offers a new possibility of writing high quality, multi-core software faster than ever, without having to leave your current platform. Clojure for Java developers aims at unleashing the true potential of the Clojure language to use it in your projects. The book begins with the installation and setup of the Clojure environment before moving on to explore the language in-depth. Get acquainted with its various features such as functional programming, concurrency, etc. with the help of example projects. Additionally, you will also, learn how the tooling works, and how it interacts with the Java environment. By the end of this book, you will have a firm grip on Clojure and its features, and use them effectively to write more robust programs.
Table of Contents (9 chapters)
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8
Index

Chapter 5. Multimethods and Protocols

We now have a better understanding of how Clojure works; we understand how to perform simple operations with immutable data structures but we are missing some features that could make our lives much easier.

If you have been a Java programmer for a while, you are probably thinking about polymorphism and its particular flavor in Java.

Polymorphism is one of the concepts that enable us to reuse a code. It gives us the ability to interact with different objects with the same API.

Clojure has a powerful polymorphism paradigm that allows us to write simple code, create code that interacts with types that don't exist yet, and extend code in ways it wasn't devised for when a programmer wrote it.

To help us with polymorphism in Clojure, we have two important concepts that we will cover in this chapter:

  • Multimethods
  • Protocols

Each of them has its own use cases and things it is best at; we will look into them in the next section.

We will learn each...

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