Book Image

Reactive Programming with Swift 4

By : Navdeep Singh
Book Image

Reactive Programming with Swift 4

By: Navdeep Singh

Overview of this book

RxSwift belongs to a large family of Rx implementations in different programming languages that share almost identical syntax and semantics. Reactive approach will help you to write clean, cohesive, resilient, scalable, and maintainable code with highly configurable behavior. This book will introduce you to the world of reactive programming, primarily focusing on mobile platforms. It will tell how you can benefit from using RxSwift in your projects, existing or new. Further on, the book will demonstrate the unbelievable ease of configuring asynchronous behavior and other aspects of the app that are traditionally considered to be hard to implement and maintain. It will explain what Rx is made of, and how to switch to reactive way of thinking to get the most out of it. Also, test production code using RxTest and the red/ green approach. Finally, the book will dive into real-world recipes and show you how to build a real-world app by applying the reactive paradigm. By the end of the book, you’ll be able to build a reactive swift application by leveraging all the concepts this book takes you through.
Table of Contents (15 chapters)
Free Chapter
Migrating from Swift 3 to Swift 4
FRP Fundamentals, Terminology, and Basic Building Blocks
Set up RxSwift and Convert a Basic Login App to its RxSwift Counterpart
RxTest and Custom Rx Extensions – Testing with Rx
Schedule Your Tasks, Don't Queue!
Subscribe to Errors and Save Your App
Functional and Reactive App-Architecture


RxTest, RxBlocking, and other related libraries provide amazingly streamlined testing of operations in RxSwift. In this chapter, we covered some basic examples of how to write unit tests in RxSwift using these two libraries. You might have noted the ease with which you can test the code and also how and why you can skip checking the options before making use of them in your unit tests. These tests are part of your code to ensure that the app behaves as per expectations and does not break in production. For those who prefer test-driven development, this chapter has laid down the foundation on which you can build amazing test targets. In upcoming chapters, we will cover how to write networking code in RxSwift and how to test the request and response by making use of these testing libraries.