a quick hack on selected items in a list via @zoejessica

ChooserView.swift

//
//  ContentView.swift
//  OrderedList
//
//  Created by Paul Wood on 8/18/19.
//  Copyright © 2019 Paul Wood. All rights reserved.
//

import SwiftUI
import Combine

class Context: ObservableObject {
  @Published var selectedIngrediants: Set<String>
  @Published var ingrediants: Array<String>
  
  init() {
    self.ingrediants = ["A","B","C"]
    self.selectedIngrediants = ["A"]
  }
}

extension String: Identifiable {
  public var id: String { return self }
}

struct Chooser : View {
  
  @ObservedObject var context: Context
  
  var body: some View {
    NavigationView {
      List (context.ingrediants, selection: $context.selectedIngrediants) { item in
        Text(item)
      }.environment(\.editMode, .constant(.active))
    }
  }
}

#if DEBUG
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
      Chooser(context: Context())
    }
}
#endif