Book Image

Clojure Programming Cookbook

Book Image

Clojure Programming Cookbook

Overview of this book

When it comes to learning and using a new language you need an effective guide to be by your side when things get rough. For Clojure developers, these recipes have everything you need to take on everything this language offers. This book is divided into three high impact sections. The first section gives you an introduction to live programming and best practices. We show you how to interact with your connections by manipulating, transforming, and merging collections. You’ll learn how to work with macros, protocols, multi-methods, and transducers. We’ll also teach you how to work with languages such as Java, and Scala. The next section deals with intermediate-level content and enhances your Clojure skills, here we’ll teach you concurrency programming with Clojure for high performance. We will provide you with advanced best practices, tips on Clojure programming, and show you how to work with Clojure while developing applications. In the final section you will learn how to test, deploy and analyze websocket behavior when your app is deployed in the cloud. Finally, we will take you through DevOps. Developing with Clojure has never been easier with these recipes by your side!
Table of Contents (16 chapters)
Clojure Programming Cookbook
About the Authors
About the Reviewer

Transforming and sorting collections

In this section, we will review different ways of getting sorted. All you ever wanted to know about sorting Clojure collections will be in this recipe.

As usual, Clojure offers practical ways of using the same functions in generic situations so as to refine your sorting to the particular needs.

In almost all cases, the sorted collection is a new instance of the input, but we will also look at corner cases when using Clojure/Java interop, where the collection may keep an internal state to be aware of.

Getting ready

This section does not make use of any external libraries, so you can just start REPL and be ready.

How to do it...

To get a good grasp of how to use the different sorting methods, we will go through the most important functions first, and we will look at the under-the-hood functions in the next sub-section.

Using built-in sort

The built-in sort is easy to grasp and use. As with the usual Clojure functions, a new collection is created on applying sorting...