🔸state

terms ⟩ state

The information stored in a variable, applilcation, or system at a given time. For example, if a variable level = 4, its current state is 4.

SwiftUI updates your views' appearances automatically whenever your app's state changes. One common way to change view states is through user interaction, such as when a person taps a Button.

struct ContentView: View {

    // ⭐️ view state (data)
    @State var isOn = true
    
    // UI
    var body: some View { ... }
    
}

👥 相關

• property：variable stored inside a type.

• ＠State：a property wrapper that tells SwiftUI to manage the storage for a view state.

• view state：the state of a view