Unexpected nil value when using Combine to fetch remote data in SwiftUI
I've spent hours debugging this and I've been working on this all day and Can someone help me understand I can't seem to get I'm confused about I tried several approaches but none seem to work. I tried several approaches but none seem to work. I've searched everywhere and can't find a clear answer. I tried several approaches but none seem to work. I'm building a SwiftUI application that fetches data from a remote API using the Combine framework. Everything works fine when I fetch data directly, but I'm working with an unexpected `nil` value when I try to decode the response into my model. The API returns a JSON with an array of users, but my `@Published` variable remains nil after the fetch. Here’s the relevant code snippet: ```swift import SwiftUI import Combine struct User: Codable { let id: Int let name: String } class UserViewModel: ObservableObject { @Published var users: [User]? private var cancellables = Set<AnyCancellable>() func fetchUsers() { guard let url = URL(string: "https://api.example.com/users") else { return } URLSession.shared.dataTaskPublisher(for: url) .map { $0.data } .decode(type: [User].self, decoder: JSONDecoder()) .replaceError(with: []) .receive(on: DispatchQueue.main) .assign(to: &$users) } } ``` In my SwiftUI view, I'm trying to display the users like this: ```swift struct UserListView: View { @ObservedObject var viewModel = UserViewModel() var body: some View { List(viewModel.users ?? []) { user in Text(user.name) } .onAppear { viewModel.fetchUsers() } } } ``` However, when I run the app, `viewModel.users` is `nil` initially and never updates. The output in the console shows no errors, but when I inspect the network response, I see that the data is being fetched correctly. I suspect there's an scenario with how I'm decoding the JSON. The JSON structure looks like this: ```json [ {"id": 1, "name": "John Doe"}, {"id": 2, "name": "Jane Smith"} ] ``` I’ve tried using a `String` decoder or inspecting the raw data but it hasn't led me to a solution. Any ideas on what might be causing the `nil` value and how to resolve this? I'm currently using Xcode 14.1 and targeting iOS 16.0. Am I missing something obvious? Any ideas what could be causing this? What's the best practice here? Am I missing something obvious? I've been using Swift for about a year now. Am I missing something obvious? I'd love to hear your thoughts on this. Thanks, I really appreciate it! I'm developing on Windows 11 with Swift.