Swift Question
How to define a protocol that contains an enum with values it defines itself and one of them is stored as an attribute?
protocol TrackableAction {
var identifier: String { get }
}
struct ServerAction: TrackableAction {
let identifier = "Server"
enum Label: String {
case NotImplemented = "Feature not implemented"
case NotPlanned = "Feature is not planned in this version"
}
var label: Label
}
struct ClientAction: TrackableAction {
let identifier = "Client"
enum Label: String {
case NoneExisting = "Does not exist"
case CannotFindRoot = "The root was unknown"
}
var label: Label
}
usage:
ServerAction(label: .NotImplemented)
ClientAction(label: .NoneExisting)
Is it possible to extend the TrackableAction to have the duplicated enum and label definition included?
I want this to be able to send objects of that type to a function
func log(trackableAction: TrackableAction) {
// sends strings to a log service
print(trackableAction.label) // ERROR
}
Answer Source
protocol TrackableAction {
var identifier: String { get }
var label: Label {get set}
associatedtype Label: RawRepresentable
}
struct ServerAction: TrackableAction {
let identifier = "Server"
enum Label: String {
case NotImplemented = "Feature not implemented"
case NotPlanned = "Feature is not planned in this version"
}
var label: Label = Label.NotImplemented
}
func log<T: TrackableAction>(trackableAction: T) {
// sends strings to a log service
print(trackableAction.label) // ERROR
}