用关联枚举数组创建SwiftUI绑定的正确方法是什么？

Question

今天早些时候，我发生了一些（无法解释的）崩溃，并将代码简化为以下所示。崩溃消失了，但我不确定100％。下面的代码是否是在枚举数组上创建Binding的正确方法？如果是的话，可以简化此代码吗？

import SwiftUI

enum TheEnum: Hashable {
    case one(Int), two(Float)
}

class TestModel : ObservableObject {
    @Published var enumArray = [TheEnum.one(5), TheEnum.two(6.0)]
}

struct ContentView: View {
    @ObservedObject var testModel = TestModel()
    var body: some View {
        HStack {
            ForEach(testModel.enumArray, id: \.self) { value -> AnyView in
                switch value {
                case .one(var intVal):
                    let b = Binding(get: { 
                        intVal
                    }) {
                        intVal = $0
                    }
                    return AnyView(IntView(intVal: b))
                case .two(var floatVal):
                    let b = Binding(get: {
                        floatVal
                    }) {
                        floatVal = $0
                    }
                    return AnyView(FloatView(floatVal: b))
                }
            }
        }
    }
}

struct IntView: View {
    @Binding var intVal: Int
    var body: some View {
        Text("\(intVal)")
    }
}

struct FloatView: View {
    @Binding var floatVal: Float
    var body: some View {
        Text("\(floatVal)")
    }
}