@State is a property wrapper for managing local, private state within a view. It should be used for simple value types that are owned and managed by the view itself. Key characteristics:
Local: State belongs to the view
Private: Should be marked private
Value Types: Works with structs, enums, and basic types
Automatic UI Updates: SwiftUI automatically redraws the view when state changes
struct ToggleView: View {
@State private var isOn = false
var body: some View {
Toggle("Switch", isOn: $isOn)
}
}
Rewriting in plainer words…
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