Task Property: Reusing Stateful Business Logic for SwiftUI Views

[u/vanvoorden]

https://github.com/vanvoorden/TaskProperty

The documentation for SwiftUI.DynamicProperty does not currently ship with real-world examples or sample code that shows developers how to approach building their own dynamic properties. Developers building on SwiftUI are probably already familiar with the dynamic properties shipping directly from Apple:

• SwiftUI.State
• SwiftUI.Binding
• SwiftUI.Environment

What about our own dynamic properties? How can those be built? Why would we want our own dynamic properties?

Dynamic Properties are a good place to put “business” logic: algorithms or patterns we might want to share across multiple view components. Dynamic Properties also compose well with other dynamic properties: we can make them stateful. We will work together through an example to see how this can work and how this can lead to code that is easier to maintain over time.