![]() ![]() However, that property wrapper can also be used outside of SwiftUI as well, and provides a way to automatically generate a publisher that emits a new value whenever a given property was changed. Perhaps the currently most common way of using Combine is through the property wrapper, which plays a really important role in SwiftUI’s overall state management system. Built-in alternativesīefore we jump into building custom publishers, however, let’s start by taking a look at a few of the built-in alternatives that Combine ships with. This week, let’s take a look at what sort of situations that might warrant a custom publisher, and a few examples of what building one could entail. ![]() Within the world of Combine, an object that emits such asynchronous values and events is called a publisher, and although the framework does ship with quite a large number of built-in publisher implementations, sometimes we might want to build our own, custom ones in order to handle specific situations. Apple’s Combine framework provides a general-purpose abstraction for asynchronous programming, by enabling various values and events to be emitted, transformed and observed over time. ![]()
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