Combine: Asynchronous Programming with Swift by By Marin Todorov & By Scott Gardner & By Shai Mishali & By Florent Pillet

Author:By Marin Todorov & By Scott Gardner & By Shai Mishali & By Florent Pillet
Language: eng
Format: epub
Publisher: Ray Wenderlich

Key points

Key-Value Observing mostly relies on the Objective-C runtime and methods of the NSObject protocol.

Many Objective-C classes in Apple frameworks offer some KVO-compliant properties.

You can make your own properties observable provided they are in a class inheriting NSObject, and marked with the @objc dynamic attributes.

You can also inherit from ObservableObject and use @Published for your properties. The compiler-generated objectWillChange publisher triggers every time one of the @Published properties changes (but doesn’t tell you which one changed).

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