It holds an object alongslide the view lifecycle. One of the use cases is to hold a model object in a view.
@available(iOS 17, *)
@Observable
private final class Model {
var count: Int = 0
func up() {
count += 1
}
}
@available(iOS 17, *)
private struct Demo: View {
@ObjectEdge var model: Model = .init()
var body: some View {
VStack {
Text("\(model.count)")
Button("Up") {
model.up()
}
}
}
}A question about how to use model objects using @Observable.
https://forums.developer.apple.com/forums/thread/739163