Code Quiz

URLSession Fetch With Loading State

Spot the bug in a URLSession REST fetch that manages loading and error states.

Codeswift

func fetchUsers() {
    isLoading = true
    let url = URL(string: "https://api.example.com/users")!
    let task = URLSession.shared.dataTask(with: url) { data, response, error in
        self.isLoading = false
        if let error = error {
            self.errorMessage = error.localizedDescription
            return
        }
        guard let data = data else { return }
        self.users = try? JSONDecoder().decode([User].self, from: data)
    }
}

What is the bug in this URLSession fetch?

← PreviousAuth Tokens & Timeouts in URLSession Next →Handling Loading and Error States in URLSession