What's async/await? When would you use it?

• Async: Marks a function as asynchronous, meaning it can suspend its execution and wait for a result without blocking the thread.
• Await: Pauses the execution of the async function until the awaited asynchronous operation completes.

When to use it:

1. Network Calls: For handling API requests or database operations without freezing the UI.
2. Concurrency: When you want to perform multiple tasks simultaneously but in a structured way.
3. Simplified Code: To replace nested closures or completion handlers, making the code cleaner and easier to maintain.

swiftCopy codefunc fetchData() async throws -> Data {

    let url = URL(string: "https://api.example.com/data")!

    let (data, _) = try await URLSession.shared.data(from: url)

    return data

}