Good morning, I'm starting with swift , and I have a question about how to manage preferences.
In android , when I deal with them, if the user has not modified it, I have one by default:
String correo = prefs.getString("email", "[email protected]");
In this way, if nothing is stored, it returns the second value ... well, it is what I would like, if it does not have any value stored by the user, have one by default.
let mail = UserDefaults.standard.string(forKey: "mail") ?? "mail@defecto"
An easy way is with UserDefaults. The syntax is for Swift 3, it varies for other versions of Swift.
var email = ""
if let mail = UserDefaults.standard.string(forKey: "mail") {
// Si existe una clave mail es que se ha creado anteriormente
// en la variable mail se guarda el valor del contenido
email = mail
} else {
// No existe la clave
email = "email@pordefecto"
}