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
1
Migrating from Swift 3 to Swift 4
2
FRP Fundamentals, Terminology, and Basic Building Blocks
3
Set up RxSwift and Convert a Basic Login App to its RxSwift Counterpart
8
RxTest and Custom Rx Extensions – Testing with Rx
10
Schedule Your Tasks, Don't Queue!
11
Subscribe to Errors and Save Your App
12
Functional and Reactive App-Architecture

Creating and subscribing to Observables

In the upcoming sections, we will work with a sample project and see how can we create and subscribe to Observables in code.

Project setup

As discussed earlier, we need to set up a workspace to work with RxSwift:

  1. Create a single view application project and name it RxBasics.
  2. Open Terminal and navigate to the project folder. Create a pod file inside your Xcode projects folder by executing the pod init command.
  3. Open the created pod file and paste the pod file's code:
# Uncomment the next line to define a global platform for your project
target 'RxBasics' do
# Comment the next line if you're not using Swift and don't want to use dynamic frameworks
use_frameworks...