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Clojure Programming Cookbook

You're reading from   Clojure Programming Cookbook Handle every problem you come across in the world of Clojure programming with this expert collection of recipes

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Product type Paperback
Published in Oct 2016
Publisher Packt
ISBN-13 9781785885037
Length 618 pages
Edition 1st Edition
Languages
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Authors (2):
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Nicolas Modrzyk Nicolas Modrzyk
Author Profile Icon Nicolas Modrzyk
Nicolas Modrzyk
Makoto Hashimoto Makoto Hashimoto
Author Profile Icon Makoto Hashimoto
Makoto Hashimoto
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Toc

Table of Contents (11) Chapters Close

Preface 1. Live Programming with Clojure FREE CHAPTER 2. Interacting with Collections 3. Clojure Next 4. File Access and the Network 5. Working with Other Languages 6. Concurrency and Parallelism 7. Advanced Tips 8. Web Applications 9. Testing 10. Deployment and DevOps

Using Reader Conditionals, compile to Clojure, and ClojureScript


Codes in Clojure and ClojureScript are almost the same but there are few differences. For instance, libraries provided by Java and JavaScript are quite different. Host environments between JVM and JavaScript runtimes are also different.

Before the version 1.7, we use the cljx plugin to keep compatibility between them. However, it requires a tooling and the style is not clean.

For such a situation, Clojure 1.7 introduced Reader Conditionals are introduced. Reader Conditionals have richer semantics than cljx, such as default expressions and form splicing and no prepossessing.

Using Reader Conditionals, we can share source code among Clojure, ClojureScript, and ClojureCLR. In this recipe, we will demonstrate how we can share single source files between Clojure and ClojureScript.

Getting ready

We will use the Figwheel template to generate a Clojure and ClojureScript project:

$ lein new figwheel cljc-example -- --om 

The generated...

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