Modern Concurrency: Getting Started

Oct 18 2022 · Swift 5.5, iOS 15, Xcode 13.4

Part 1: Asynchronous Code

06. Additional Error Handling

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00:46Your challenge is to handle one more error. What if the server stops while you’re in the live ticker view?

01:40In LittleJohnModel, in startTicker, below the for loop, I added this code:

await MainActor.run {
  tickerSymbols = []
}

.onChange(of: model.tickerSymbols.count) { newValue in
  if newValue == 0 {
    presentationMode.wrappedValue.dismiss()
  }
}