Book Image

Learning RxJava - Second Edition

By : Nick Samoylov, Thomas Nield
Book Image

Learning RxJava - Second Edition

By: Nick Samoylov, Thomas Nield

Overview of this book

RxJava is not just a popular library for building asynchronous and event-based applications; it also enables you to create a cleaner and more readable code base. In this book, you’ll cover the core fundamentals of reactive programming and learn how to design and implement reactive libraries and applications. Learning RxJava will help you understand how reactive programming works and guide you in writing your first example in reactive code. You’ll get to grips with the workings of Observable and Subscriber, and see how they are used in different contexts using real-world use cases. The book will also take you through multicasting and caching to help prevent redundant work with multiple Observers. You’ll then learn how to create your own RxJava operators by reusing reactive logic. As you advance, you’ll explore effective tools and libraries to test and debug RxJava code. Finally, you’ll delve into RxAndroid extensions and use Kotlin features to streamline your Android apps. By the end of this book, you'll become proficient in writing reactive code in Java and Kotlin to build concurrent applications, including Android applications.
Table of Contents (22 chapters)
1
Section 1: Foundations of Reactive Programming in Java
5
Section 2: Reactive Operators
12
Section 3: Integration of RxJava applications
Appendix B: Functional Types
Appendix E: Understanding Schedulers

Summary

In this chapter, we covered how to use RxJava for Kotlin. The Kotlin language is an exciting opportunity to express code on the JVM more pragmatically, and RxJava can leverage many of its useful features. Extension functions, data classes, RxKotlin, and functional operators such as let()/apply() allow you to express your reactive domain more easily. Although SAM inference can cause you to hit snags, you can leverage RxKotlin's helper utilities to get around this issue until JetBrains creates a fix. Down the road, it will be interesting to see whether a ReactiveX implementation in pure Kotlin appears. Such an implementation would bring in a lot of functionality that Kotlin allows and Java does not.

This is the end! If you have completed this book from cover to cover, congrats! You should have a strong foundation to leverage RxJava in your workplace and projects. Reactive...