How can I use async/await in SwiftUI?

How can I use async/await in SwiftUI?

You can use async/await in SwiftUI to handle asynchronous tasks more easily. It allows you to write asynchronous code that looks synchronous, making it easier to read and maintain.

Can you give me an example of using async/await with a network request?

Sure! Here's a simple example:

struct ContentView: View {
    @State private var data: String = ""

    var body: some View {
        Text(data)
            .onAppear {
                Task {
                    data = await fetchData()
                }
            }
    }

    func fetchData() async -> String {
        let url = URL(string: "https://api.example.com/data")!
        let (data, _) = try! await URLSession.shared.data(from: url)
        return String(data: data, encoding: .utf8) ?? "No data"
    }
}

This code fetches data from a URL when the view appears.

What if I need to handle errors in my async function?

You can use a do-catch block to handle errors in your async function. Here's how you can modify the fetchData function:

func fetchData() async -> String {
    do {
        let url = URL(string: "https://api.example.com/data")!
        let (data, _) = try await URLSession.shared.data(from: url)
        return String(data: data, encoding: .utf8) ?? "No data"
    } catch {
        return "Error: \(error.localizedDescription)"
    }
}