Property wrapper in Swift
Property wrapper is the Swift language feature that allows us to define a custom type, that implements behavior from get and set methods, and reuse it everywhere. Declare @propertyWrapper keyword before we declare the type that we want to use as property wrapper. It can be struct , class , or enum . We are required to implement the wrappedValue property. Most of the time we declare custom setter and getter in this property. This property can be a computed or stored property. Example of @Properywrapper @propertyWrapper struct Capitalized { private(set) var text: String = "" //Declared to store the value var wrappedValue: String { get { return text } set { text = newValue.uppercased() } } } //Now use it struct User{ @Capitalized var userName: String } var user = User() user.userName = "Pawan" print(user.userName) //PAWAN Thanks for reading, Happy Coding...