WWDC22: Use The New For In Try Await

Daily Coding Tip 100

Celebrating WWDC 2022 and the 100th Daily Coding Tip 🥳

All tutorials will be free this week!

Image by Roland Lötscher from Pixabay

When I tried to use the new for in try await pattern, Xcode 14 Beta told me that it required something conforming to AsyncSequence.

The following code is based on Apple’s documentation comments for AsyncSequence, as I thought this would be a quick way to get a type that would work for this.

Counter.swift

Now I know this example doesn’t need SwiftUI, but I thought it would be useful to show it as a task attached to an empty view. By creating an async function that doesn’t actually wait or throw, we are able to fulfil the expectations of this new way to loop in asynchronous sequences that may throw.

ForTryAwaitContentView.swift

Last Week’s Daily Coding Tips

1. Proportional Padding That Scales With a SwiftUI View

2. A ColorPicker That Sets and Stores Your View's Foreground Colour Within a ViewModifier

3. Turn Any View Into a Toggle Using One Simple Modifier

4. Using State and Binding Without The @ Symbol

5. Recreate The Apple Logo Using a SwiftUI Path With Only 7 Points

6. Using AsyncImage To Display An Image From Any URL

7. Create Space Between SwiftUI Views Without Using a Spacer