Combine: Asynchronous Programming with Swift

Book excerpt: Dive into Combine!Writing asynchronous code can be challenging, with a variety of possible interfaces to represent, perform and consume asynchronous work - delegates, notification center, KVO, closures, etc. Juggling all of these different mechanisms can be somewhat overwhelming. Does it have to be this hard? Not anymore!In this book, you'll learn about Combine - Apple's framework to work with asynchronous events in a unified and reactive way that ensures your app is always up to date based on the latest state of its data.Who This Book Is ForThis book is for intermediate iOS developers who already know the basics of iOS and Swift development but who are interested in taking their app and state management to the next level by learning declarative/reactive programming.You'll also enjoy this book if you're interested in SwiftUI, since many of the reactive capabilities keeping your SwiftUI views up-to-date are built on top of Combine.Topics Covered in Combine: Asynchronous Programming With SwiftWhat & Why: Learn what Combine and reactive programming are, the problems they solve and how you can unify all of your asynchronous pieces of work.Operators: Learn how to compose, transform, filter and otherwise manipulate different pieces of asynchronous work using operators.In Practice: Gain knowledge on various topics and techniques you'll leverage when writing your own real-life apps. You'll then practice these techniques with actual hands-on apps and projects.SwiftUI: Discover how Combine is deeply rooted within SwiftUI, providing it with the ability to reactively update its views based on the state of your app.Advanced Combine: Once you've got a handle on the basics, you'll dive into advanced Combine topics such as Error Handling, Schedulers, and Custom Publishers.By the end of this book, you'll be a pro in building full-fledged apps using Combine's various abilities.