Identifiable Array and TestStore

[ivangodfather]

While doing the TCA tour videos I got stuck if I change the signature of the todo's to IdentifiedArrayOf (the suggested one).
Cannot assign to property: subscript is get-only

struct AppState: Equatable {
	var todos: IdentifiedArrayOf<Todo>
}

store.send(.todo(id: UUID(), action: .checkboxTapped)) {
        $0.todos[0].isComplete = true
}

[stephencelis]

Hi @ivangodfather! Although many of the core principles remain the same from those episodes, there have been a bunch of API changes since recording.

The main issue here is that IdentifiedArray cannot be mutated via its index. Instead, you should be able to use the id-based subscript:

let id = UUID(uuidString: "00000000-0000-0000-0000-000000000000")!

store.send(.todo(id: id, action: .checkboxTapped) {
  $0.todos[id: id]!.isComplete = true
}