Binding Constant Alternative, but Mutable - swiftui

Question

I have a view like this:
struct View1: View {
#Binding var myVariable: Bool
init() {
_myVariable = Binding.constant(true) // It works but myVariable is immutable, so I can't edit myVariable
}
init(myVariable: Binding<Bool>) {
_myVariable = myVariable
}
var body: some View {
Button("Change") {
myVariable.toggle()
}
}
}
struct View2: View {
var body: some View {
View1()
}
}
struct View3: View {
#State var myVariable = false
var body: some View {
View1(myVariable: $myVariable)
}
}
And I want to make this: If there is a parameter provided, set this to myVariable like second init in View1. Else, set the first value of myVariable like in first init.
I tried to use Binding.constant(value) but it is immutable. And I can't edit the variable. So, I need a mutable Binding initializer like Binding.constant(value). But I can't find it.
How can I solve this problem?

Answer 1

To avoid over-complicating View1, you can create an intermediate view with that name, and then have a private 'internal' view which has the actual implementation.
Code:
private struct View1Internal: View {
#Binding var myVariable: Bool
var body: some View {
Button("Change") {
myVariable.toggle()
}
}
}
struct View1: View {
private enum Kind {
case state
case binding(Binding<Bool>)
}
#State private var state = true
private let kind: Kind
init() {
kind = .state
}
init(myVariable: Binding<Bool>) {
kind = .binding(myVariable)
}
var body: some View {
switch kind {
case .state: View1Internal(myVariable: $state)
case .binding(let binding): View1Internal(myVariable: binding)
}
}
}