Combine Asynchronous Programming with Swift

About the Cover
	About the Authors
	About the Artist
What You Need
Book License
Book Source Code & Forums
Chapter 1: Hello, Combine!
	Asynchronous programming
	Foundation of Combine
	Combine basics
	What's the benefit of Combine code over "standard" code?
	App architecture
	Book projects
	Key points
	Where to go from here?
Chapter 2: Publishers & Subscribers
	Getting started
	Hello Publisher
	Hello Subscriber
	Hello Cancellable
	Understanding what’s going on
	Creating a custom subscriber
	Hello Future
	Hello Subject
	Dynamically adjusting demand
	Type erasure
	Challenge
	Key points
	Where to go from here?
Chapter 3: Transforming Operators
	Getting started
	Collecting values
	Mapping values
	Flattening publishers
	Replacing upstream output
	Incrementally transforming output
	Challenge
	Key points
	Where to go from here?
Chapter 4: Filtering Operators
	Getting started
	Filtering basics
	Compacting and ignoring
	Finding values
	Dropping values
	Limiting values
	Challenge
	Key points
	Where to go from here?
Chapter 5: Combining Operators
	Getting started
	Prepending
	Appending
	Advanced combining
	Key points
	Where to go from here?
Chapter 6: Time Manipulation Operators
	Getting started
	Shifting time
	Collecting values
	Collecting values (part 2)
	Holding off on events
	Timing out
	Measuring time
	Challenge
	Key points
	Where to go from here?
Chapter 7: Sequence Operators
	Getting started
	Finding values
	Querying the publisher
	Key points
	Where to go from here?
Chapter 8: In Practice: Project "Collage"
	Getting started with "Collage"
	Talking to other view controllers
	Wrapping a callback function as a future
	Presenting a view controller as a future
	Sharing subscriptions
	Publishing properties with @Published
	Operators in practice
	Challenges
	Key points
	Where to go from here?
Chapter 9: Networking
	URLSession extensions
	Codable support
	Publishing network data to multiple subscribers
	Key points
	Where to go from here?
Chapter 10: Debugging
	Printing events
	Acting on events — performing side effects
	Using the debugger as a last resort
	Key points
	Where to go from here?
Chapter 11: Timers
	Using RunLoop
	Using the Timer class
	Using DispatchQueue
	Key points
	Where to go from here?
Chapter 12: Key-Value Observing
	Introducing publisher(for:options:)
	Preparing and subscribing to your own KVO-compliant properties
	ObservableObject
	Key points
	Where to go from here?
Chapter 13: Resource Management
	The share() operator
	The multicast(_:) operator
	Future
	Key points
	Where to go from here?
Chapter 14: In Practice: Project "News"
	Getting started with the Hacker News API
	Getting a single story
	Multiple stories via merging publishers
	Getting the latest stories
	Challenges
	Key points
	Where to go from here?
Chapter 15: In Practice: Combine & SwiftUI
	Hello, SwiftUI!
	Getting started with "News"
	A first taste of managing view state
	Fetching the latest stories
	Using ObservableObject for model types
	Displaying errors
	Subscribing to an external publisher
	Initializing the app's settings
	Editing the keywords list
	Challenges
	Key points
	Where to go from here?
Chapter 16: Error Handling
	Getting started
	Never
	Dealing with failure
	Key points
	Where to go from here?
Chapter 17: Schedulers
	An introduction to schedulers
	Operators for scheduling
	Scheduler implementations
	Challenges
	Key points
	Where to go from here?
Chapter 18: Custom Publishers & Handling Backpressure
	Creating your own publishers
	Publishers as extension methods
	The subscription mechanism
	Publishers emitting values
	Publishers transforming values
	Handling backpressure
	Key points
	Where to go from here?
Chapter 19: Testing
	Getting started
	Testing Combine operators
	Testing production code
	Challenges
	Key points
	Where to go from here?
Chapter 20: In Practice: Building a Complete App
	Getting started
	Setting goals
	Implementing JokesViewModel
	Wiring JokesViewModel up to the UI
	Implementing Core Data with Combine
	Challenge
	Key points
	Where to go from here?
Conclusion