let garageIDs = Vehicle.vehicles .map { $0.garageID } .removeDuplicates() let garagesWithVehicles = Garage.localGarages .filter( { garageIDs.contains($0.id) } ) // ["Cary's Garage","Amy's Master Shop","Maureen's Vintage Cars"]
let garageIDs = Vehicle.vehicles .map { $0.garageID } .removeDuplicates() let garagesWithVehicles = Garage.localGarages .filter( { garageIDs.contains($0.id) } ) // ["Cary's Garage","Amy's Master Shop","Maureen's Vintage Cars"]