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| Combine Asynchronous Programming with Swift |
Book Details
Title: Combine Asynchronous Programming with Swift Ray Wenderlich
Author: By Scott Gardner, Shai Mishali, Florent Pillet & Marin Todorov
Publisher: Razeware LLC
Language: English
Subject: Swift / Computers & Technology / Programming / Apple Programming
Format: PDF, EPUB, Full source code
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Chapter2: Publishers & Subscribers
Now that you’ve learned some of the basic concepts of Combine, it’s time to jump in
and play with two of Combine’s core components — publishers and subscribers.
In this chapter, you’ll review several examples of creating publishers and subscribing to those publishers using subscribers. By doing so, you’ll acquire important skills that you’ll use throughout the rest of this book and beyond.
Getting started
In this chapter, you’ll review several examples of creating publishers and subscribing to those publishers using subscribers. By doing so, you’ll acquire important skills that you’ll use throughout the rest of this book and beyond.
Getting started
Note: There are starter and final versions of the playgrounds and projects you’ll
use in each chapter throughout the book. The starter will be prepared and ready
for you to enter the code specified for each example and challenge. You can
compare your work with the final version at the end or along the way if you get
stuck.
For this chapter, you’ll use an Xcode playground with Combine imported. Open the
starter playground found in projects/starter. You’ll see the following:
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| Chapter2: Publishers & Subscribers |
Open Sources in the Project navigator (View ▸ Navigators ▸ Show Project
Navigator and twist down the Combine playground page), and select
SupportCode.swift. It contains the following helper function example(of:):
}
You’ll use this function to encapsulate some examples you’ll use throughout this book. However, before you begin playing with those examples, you first need to learn about publishers and subscribers.
public func example(of description: String, action: () -> Void) { print("\n--- Example of:", description, "---")action()
}
You’ll use this function to encapsulate some examples you’ll use throughout this book. However, before you begin playing with those examples, you first need to learn about publishers and subscribers.
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