Swift enum name string with associated values

enumCaseName.swift

// Swift enums cannot be declared with a rawValue if they have associated values
// like good ol' Amargasaurus has. Using String(describing: dino) on a case with
// associated also includes the values, but works fine on unassociated cases.
// Mirror(reflecting: dino) can extract the name of an associated case, but is
// nil for unassociated cases. Our hero ?? swoops in to save the day!

enum Sauropoda {
    case Amargasaurus(things: Int64, hasOtherThing: Bool?)
    case Antetonitrus
    // ...
    case Titanosauriformes
    case Vulcanodon

    var caseName: String {
        return Mirror(reflecting: self).children.first?.label ?? String(describing: self)
    }
}

let v = Sauropoda.Vulcanodon
print(String(describing: v))
// Vulcanodon
print(Mirror(reflecting: v).children.first?.label)
// nil
print(v.caseName)
// Vulcanodon

let a = Sauropoda.Amargasaurus(things: 314, hasOtherThing: nil)
print(String(describing: a))
// Amargasaurus(things: 314, hasOtherThing: nil)
print(Mirror(reflecting: a).children.first?.label)
// Optional("Amargasaurus")
print(a.caseName)
// Amargasaurus

Thanks for sharing, saved a few time of playgrounding :)

Glad it helped! :)

Thank you! Now I understand when to use each one of the String constructors

Thank you! With this decision, I will go through a Revue in the store?