The Clojure Workshop

Cut through the noise and get real results with a step-by-step approach to learning Clojure programming

Key Features

• Ideal for the Clojure beginner who is getting started for the first time
• A step-by-step Clojure tutorial with exercises and activities that help build key skills
• Structured to let you progress at your own pace, on your own terms
• Use your physical print copy to redeem free access to the online interactive edition

Book Description

You already know you want to learn Clojure, and a smarter way to learn Clojure is to learn by doing. The Clojure Workshop focuses on building up your practical skills so that you can write clean, expressive code with a language that is great for applications where concurrency and interoperability with the JVM are a priority. You'll learn from real examples that lead to real results.

Throughout The Clojure Workshop, you'll take an engaging step-by-step approach to understanding Clojure. You won't have to sit through any unnecessary theory. If you're short on time you can jump into a single exercise each day or spend an entire weekend learning about Clojure web development with Ring. It's your choice. Learning on your terms, you'll build up and reinforce key skills in a way that feels rewarding.

Every physical print copy of The Clojure Workshop unlocks access to the interactive edition. With videos detailing all exercises and activities, you'll always have a guided solution. You can also benchmark yourself against assessments, track progress, and receive content updates. You'll even earn a secure credential that you can share and verify online upon completion. It's a premium learning experience that's included with your printed copy. To redeem, follow the instructions located at the start of your Clojure book.

Fast-paced and direct, The Clojure Workshop is the ideal for Clojure beginners. You'll build and iterate on your code like a software developer , learning along the way. This process means that you'll find that your new skills stick, embedded as best practice. A solid foundation for the years ahead.

What you will learn

• Learn about Clojure fundamentals like functional programming
• Understand and implement common Clojure patterns and best practices
• Explore Clojure's testing infrastructure and the clojure.test library
• Build a client-server application with Clojure and ClojureScript
• Learn how to debug and resolve errors and exceptions
• Explore Ring - Clojure's interface and library for building web applications

Who this book is for

Our goal at Packt is to help you be successful, in whatever it is you choose to do. The Clojure Workshop is an ideal Clojure tutorial for the Clojure beginner who is just getting started. Pick up a Workshop today, and let Packt help you develop skills that stick with you for life.

Table of Contents

1. Hello REPL!
2. Data Types and Immutability
3. Functions in Depth
4. Mapping and Filtering
5. Many to One: Reducing
6. Recursion and Looping
7. Recursion II: Lazy Sequences
8. Namespaces, Libraries, and Leiningen
9. Host Platform Interop - (Java and JavaScript)
10. Testing
11. Macros
12. Concurrency
13. Database Interaction and the Application Layer
14. HTTP with Ring
15. The Frontend: a Clojurescript UI

Joseph Fahey has been a developer for nearly two decades. He got his start in the Digital Humanities in the early 2000s. Ever since then, he has been trying to hone his skills and expand his inventory of techniques. This lead him to Common Lisp and then to Clojure when it was first introduced. As an independent developer, Joseph was able to quickly start using Clojure professionally. These days, Joseph gets to write Clojure for his day job at Empear AB.

Thomas Haratyk graduated from Lille University of Science and Technology and has been a professional programmer for nine years. After studying computer science and starting his career in France, he is now working as a consultant in London, helping start-ups develop their products and scale their platforms with Clojure, Ruby, and modern JavaScript.

Scott McCaughie lives near Glasgow, Scotland where he works as a senior Clojure developer for Previse, a Fintech startup aiming to solve the problem of slow payments in the B2B space. Having graduated from Heriot-Watt University, his first 6 years were spent building out Risk and PnL systems for JP Morgan. A fortuitous offer of a role learning and writing Clojure came up and he jumped at the chance. 5 years of coding later and it's the best career decision he's made. In his spare time, Scott is an avid reader, enjoys behavioral psychology and financial independence podcasts, and keeps fit by commuting by bike, running, climbing, hill walking, snowboarding. You get the picture!

Yehonathan Sharvit has been a software developer since 2001. He discovered functional programming in 2009. It has profoundly changed his view of programming and his coding style. He loves to share his discoveries and his expertise. He has been giving courses on Clojure and JavaScript since 2016. He holds a master's degree in Mathematics.

Konrad Szydlo is a psychology and computing graduate from Bournemouth University. He has worked with Clojure for the last 8 years. Since January 2016, he has worked as a software engineer and team leader at Retailic, responsible for building a website for the biggest royalty program in Poland. Prior to this, he worked as a developer with Sky, developing e-commerce and sports applications, where he used Ruby, Java, and PHP. He is also listed in the Top 75 Datomic developers on GitHub.