Swift Language Enums Nested Enumerations
Example
You can nest enumerations one inside an other, this allows you to structure hierarchical enums to be more organized and clear.
enum Orchestra {
enum Strings {
case violin
case viola
case cello
case doubleBasse
}
enum Keyboards {
case piano
case celesta
case harp
}
enum Woodwinds {
case flute
case oboe
case clarinet
case bassoon
case contrabassoon
}
}
And you can use it like that:
let instrment1 = Orchestra.Strings.viola
let instrment2 = Orchestra.Keyboards.piano
