What is the method to set a default or nil value for @Binding in the initializer of a SwiftUI View?

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To set a default or nil value for @Binding in the initializer of a SwiftUI View, you can use a property wrapper called @State. Here is an example:

struct MyView: View {
  @Binding var myBinding: Bool

  init(myBinding: Binding<Bool> = .constant(false)) {
    _myBinding = State<Bool>(initialValue: myBinding.wrappedValue)
  }

  var body: some View {
    // ...
  }
}

In this example, we use the @State property wrapper to store the initial value of our binding in the _myBinding property, which is then used as the source of our @Binding property. If no value is provided for myBinding when the view is initialized, we default to a constant value of false.