👀 Views: 49 💬 Answers: 1 📅 Created: 2025-06-30

swift combine async-await ios17 Swift

I'm converting an old project and I'm refactoring my project and I've searched everywhere and can't find a clear answer... I'm working with a question when trying to integrate Swift Concurrency with the Combine framework in my iOS 17 app. I have a method that fetches data asynchronously using async/await, but I also need to process this data using a Combine publisher. After calling the async function, I'm not able to subscribe to the Combine publisher as expected, and I'm getting the following behavior: `Combine behavior: 'want to use async function in a Combine pipeline.'`. Here's the structure of my code: ```swift import Combine class DataFetcher { var cancellables = Set<AnyCancellable>() func fetchData() async throws -> [String] { let url = URL(string: "https://example.com/data")! let (data, _) = try await URLSession.shared.data(from: url) return try JSONDecoder().decode([String].self, from: data) } func processData() { Task { do { let data = try await fetchData() Just(data) .sink(receiveCompletion: { completion in switch completion { case .finished: print("Finished processing data") case .failure(let behavior): print("behavior: \(behavior)") } }, receiveValue: { value in print("Received value: \(value)") }) .store(in: &cancellables) } catch { print("Failed to fetch data: \(behavior)") } } } } ``` I've tried breaking the async fetch into a separate function and calling that from within the Combine pipeline, but that still leads to the same behavior. I suspect I'm missing something about how to properly chain async functions with Combine. If anyone has experience combining these two paradigms or can point me in the right direction, I'd greatly appreciate it. For context: I'm using Swift on Linux. Is there a better approach? The project is a desktop app built with Swift. How would you solve this? Am I approaching this the right way?