Fix UIKit Case Study warning (#924)

* Fix UIKit Case Study warning

* wip

Co-authored-by: Brandon Williams <[email protected]>

Author: stephencelis

Examples/CaseStudies/UIKitCaseStudies/CounterViewController.swift

@@ -3,7 +3,8 @@ import ComposableArchitecture
 import SwiftUI
 import UIKit
 
-struct CounterState: Equatable {
+struct CounterState: Equatable, Identifiable {
+  let id = UUID()
   var count = 0
 }
 

Examples/CaseStudies/UIKitCaseStudies/ListsOfState.swift

@@ -4,19 +4,19 @@ import SwiftUI
 import UIKit
 
 struct CounterListState: Equatable {
-  var counters: [CounterState] = []
+  var counters: IdentifiedArrayOf<CounterState> = []
 }
 
 enum CounterListAction: Equatable {
-  case counter(index: Int, action: CounterAction)
+  case counter(id: CounterState.ID, action: CounterAction)
 }
 
 struct CounterListEnvironment {}
 
 let counterListReducer: Reducer<CounterListState, CounterListAction, CounterListEnvironment> =
   counterReducer.forEach(
     state: \CounterListState.counters,
-    action: /CounterListAction.counter(index:action:),
+    action: /CounterListAction.counter(id:action:),
     environment: { _ in CounterEnvironment() }
   )
 
@@ -63,11 +63,12 @@ final class CountersTableViewController: UITableViewController {
   }
 
   override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+    let counter = self.viewStore.counters[indexPath.row]
     self.navigationController?.pushViewController(
       CounterViewController(
         store: self.store.scope(
-          state: \.counters[indexPath.row],
-          action: { .counter(index: indexPath.row, action: $0) }
+          state: { _ in counter },
+          action: { .counter(id: counter.id, action: $0) }
         )
       ),
       animated: true

Examples/CaseStudies/tvOSCaseStudies/FocusView.swift

@@ -48,7 +48,13 @@ let focusReducer = Reducer<FocusState, FocusAction, FocusEnvironment> {
             .padding()
 
           HStack(spacing: 40) {
-            ForEach(1..<11) { index in
+            ForEach(1..<6) { index in
+              Button(numbers[index]) {}
+                .prefersDefaultFocus(viewStore.currentFocus == index, in: self.namespace)
+            }
+          }
+          HStack(spacing: 40) {
+            ForEach(6..<11) { index in
               Button(numbers[index]) {}
                 .prefersDefaultFocus(viewStore.currentFocus == index, in: self.namespace)
             }