Combine: Asynchronous Programming with Swift, 2nd Edition

Combine: Asynchronous Programming with Swift, 2nd Edition
出版时间:2020.10
官网链接:RayWenderlich
下载地址:百度网盘(PDF+EPUB+CODE)
提取码    :xnpw

内容简介:

Up to date for iOS 14, Xcode 12 & Swift 5.3

Master declarative asynchronous programming with Swift using the Combine framework!

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 really have to be this hard? Not anymore!

With Apple’s introduction of the Combine framework in WWDC 2019, it is clear that Apple aims to position declarative and reactive programming in Swift as a long-term investment and a game-changer in how developers perform and compose pieces of asynchronous work, making it a must-have tool at your disposal.

The introduction of Combine as a built-in framework in Apple’s ecosystem is promising news to developers who were interested in frameworks such as RxSwift or ReactiveSwift, but didn’t want the overhead of a third-party dependency; and while experience with either of the above could be useful, it is not a prerequisite for this book. You’ll learn everything from the ground up to become a true Combine master.

What Is Combine?

Combine is 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.

What are these asynchronous events, you might ask? Anything that happens over time in your application can be represented by what is known as a Combine Publisher — network requests, user input, notifications, KVO, and much more. And since Combine unifies all of these different mechanisms under a single interface, this opens the door to interesting and powerful ways of composing logic and work in a declarative and universal way.

Combine is also tightly integrated throughout Apple’s SDKs. For example, the UI framework SwiftUI uses Combine to ensure your app’s views stay up to date, which makes Combine a must-have for your skillset.

Who is this book for

Combine uses a multitude of advanced Swift features such as generics, so you should have at least an intermediate-level knowledge of Swift.

Concepts covered in this book

  • Reactive programming
  • Combine operators
  • Usage in real-world apps
  • SwiftUI with Combine
  • Error handling
  • Custom publishers

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