How do I bridge async code with completion handlers?

In Swift, bridging async code with completion handlers is essential for handling asynchronous operations like network requests, database queries, or any other tasks that take time to complete. This technique allows the rest of your code to continue running while waiting for the asynchronous call to finish and then executing a callback to handle the result.

func fetchData(completion: @escaping (Result) -> Void) { // Simulating an asynchronous operation DispatchQueue.global().async { // Simulating a network request delay sleep(2) // Imagine we fetched some data let data = Data() // Replace with actual data // Call the completion handler with the data completion(.success(data)) } } // Usage of the fetchData function with a completion handler fetchData { result in switch result { case .success(let data): print("Data received: \(data)") case .failure(let error): print("Error occurred: \(error)") } }

Swift async completion handlers asynchronous operations await

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