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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

Manipulating files and directories

In this recipe, we will show you how to read from files and write to files. Then we will learn how to create, delete, and list files and directories.

Getting ready

This recipe does not make use of any external library, so you can just start a REPL and be ready. As we manipulate files and directories, be careful to not delete files or directories and not overwriting the contents of your important files through inattention. We will make use of the source code of Clojure on the GitHub, so you need to install the git client to obtain the source.

How to do it...

Let's learn how to read and write files. We will also learn how to create and delete files and directories. Then we will see how to list files and directories.

spit and slurp

The spit writes a string to a file and the slurp reads the contents of a file as string:

(spit "/tmp/hello.txt" "Hello World Nico!" ) 
;;=> nil 

The spit with the :append true option appends a string to...

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