SwiftUI中的ForEach TextField

import SwiftUI

struct ContentView: View {
    @State private var names = ["John", "Jane", "Bob"]
    
    var body: some View {
        VStack {
            ForEach(names, id: \.self) { name in
                TextField("Enter name", text: self.$names[self.index(of: name)])
            }
        }
    }
    
    private func index(of name: String) -> Binding<Int> {
        Binding<Int>(
            get: {
                self.names.firstIndex(of: name) ?? 0
            },
            set: { newValue in
                self.names[self.names.firstIndex(of: name) ?? 0] = self.names[newValue]
            }
        )
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}