Clojure for Java Developers by Eduardo Diaz

By Eduardo Diaz

Key Features

  • Write apps for the multithreaded international with Clojure's taste of practical programming
  • Discover Clojure's positive aspects and merits and use them on your latest projects
  • The ebook is designed in order that you can be capable positioned to exploit your current talents and software program wisdom to develop into a more beneficial Clojure developer

Book Description

We have reached some degree the place machines should not getting a lot swifter, software program initiatives have to be brought quick, and prime quality in software program is extra not easy as ever.

We have to discover new methods of writing software program that is helping in achieving these pursuits. Clojure deals a brand new chance of writing top of the range, multi-core software program speedier than ever, with no need to depart your present platform.

Clojure for Java builders goals at unleashing the genuine strength of the Clojure language to exploit it on your tasks. The ebook starts off with the set up and setup of the Clojure setting earlier than relocating directly to discover the language in-depth. Get familiar with its numerous gains resembling useful programming, concurrency, and so forth. with assistance from instance tasks. you will also additionally, find out how the tooling works, and the way it interacts with the Java environment.

By the tip of this e-book, you've an organization grip on Clojure and its good points, and use them successfully to put in writing extra powerful programs.

What you are going to learn

  • Understand the instruments for the Clojure international and the way they relate to Java instruments and criteria (like Maven)
  • Learn approximately immutable info buildings, and what makes them possible for daily programming
  • Write uncomplicated multi-core courses utilizing Clojure's center strategies, like atoms, brokers and refs
  • Understand that during Clojure, code is facts, and the way to exploit that truth by means of producing and manipulating code with macros
  • Learn how Clojure interacts with Java, how the category loaders paintings and the way to take advantage of Clojure from Java or the opposite direction around
  • Discover a brand new, extra versatile that means of polymorphism and take into account that OOP isn't the in simple terms technique to get it

About the Author

Eduardo Diaz is a developer with a powerful historical past within the Java language. He has a keenness for useful programming and new programming paradigms. His paintings comprises complete stack improvement, structures layout, and excessive quantity genuine time info processing.

He has labored on each know-how similar challenge you could think, as a expert fixing something regarding Java, UNIX, C, or the other unusual challenge you have had.

As a developer, he has been operating for round 10 years on Java, Python, Scala, Clojure, within the media, financial institution, and basically communications industries.

He is at the moment operating at Grupo enlargement, a media corporation, the place he is helping layout and enforce a brand new content material supply platform aiming to empower content material editors and inspire builders to discover new how you can use data.

Table of Contents

  1. Getting began with Clojure
  2. Namespaces, programs, and Tests
  3. Interacting with Java
  4. Collections and useful Programming
  5. Multimethods and Protocols
  6. Concurrency
  7. Macros in Clojure

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Clojure for Java Developers

Key FeaturesWrite apps for the multithreaded international with Clojure's style of sensible programmingDiscover Clojure's good points and merits and use them on your latest projectsThe publication is designed in order that you will be capable placed to exploit your current abilities and software program wisdom to develop into a more suitable Clojure developerBook DescriptionWe have reached some extent the place machines aren't getting a lot quicker, software program tasks have to be introduced speedy, and prime quality in software program is extra difficult as ever.

Extra resources for Clojure for Java Developers

Example text

Core-test package. Date class. * to get a similar effect. We can achieve this with the :refer :all keywords. hello with hello and it also makes the <3 function available without a prefix. To generate an alias and make everything available with the hello alias, we use the :as keyword and then pass a vector to :refer to include certain elements. core namespace available in the current namespace. We achieve this with the :refer :all keywords. (defn- lazy-contains? [col element] (not (empty? , it is a boolean function and it is customary in Clojure to call it a predicate.

Loving-seq "I love chocolate")) (is (lazy-contains? loving-seq "I love you"))))) This test checks the <3 function, it checks that the returned collection contains I love Clojure, I love doggies, I love chocolate and I love you and it should not contain I love Vogons. This test is simple to understand. What might be not so simple to understand is the <3 function, we'll look into it with the REPL. [ 36 ] Chapter 2 Summary In this chapter, we got to know some utilities that we can use for better management of our code and we have some more examples of everyday Clojure code.

You can do it as you learned in the previous chapter. You just need to follow the following steps: 1. clj file and select Create REPL for ns-playground, as shown in the following screenshot: 2. Then click on OK in the next dialog. 3. clj file and selecting Run REPL for ns-playground. 4. After that you can run any tests, just open your test file and go to Tools | Run Tests in the current NS in REPL. You should see something similar to the following screenshot: [ 32 ] Chapter 2 5. As you can see, it signals that your test is currently failing.

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