quick example of how to use selection in a SwiftUI list, an ObservableObject provides the content as well

SelectedItems.swift

//: [Previous](@previous)

import SwiftUI
import Combine
import PlaygroundSupport

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

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

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

let selectedItems = SelectedItems(context: Context())
let viewController = UIHostingController(rootView: selectedItems)
PlaygroundPage.current.liveView = viewController

//: [Next](@next)

Shame List selection binding is Mac only