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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

Defining simple macros


Macros in Clojure allow you to redefine the processing flow and generate code through a simple but very Clojure-esque defmacro construct.

This section will guide us through writing some of those building blocks and reading some macro code from the original from Clojure.

Getting ready

Macro-biotics and a spoon are all you need for this recipe. No other agricultural produce required.

How to do it...

All you ever wanted to know about writing simple Clojure macros is in this section. Keep on writing those simple macros until it finally makes sense.

Your first macro

Well, here you go. Your first macro is here:

(defmacro my-very-first-macro []  
  (list println "FIRST")) 

Okay, that was kind of a fast introduction to something that deserves description; it's time to bring you upto speed.

First, the defmacro routine requires a name and some parameters. There you go, we give it the name my-very-first-macro and, being a bit on the greedy side, no parameter whatsoever.

Now to...

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