How do I handle unknown fields safely using Property Lists with Swift?

In Swift, when dealing with Property Lists, it's important to manage unknown fields safely to prevent runtime errors and ensure your app remains robust. Using optional binding and default values can help handle cases where fields may not be present.

Example of Handling Unknown Fields in Swift

let userDefaults = UserDefaults.standard // Simulating fetching a dictionary from a property list let userInfo: [String: Any] = [ "name": "John Doe", // "age": 30, // unknown field "email": "johndoe@example.com" ] // Safe access to unknown fields let name = userInfo["name"] as? String ?? "Unknown" let age = userInfo["age"] as? Int ?? 0 // Default value if age is not present let email = userInfo["email"] as? String ?? "No email provided" print("Name: \(name), Age: \(age), Email: \(email)")

Swift Property Lists Unknown Fields Safe Handling Optional Binding UserDefaults

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