protocol + func

Playground.swift

@@ -10,6 +10,13 @@ protocol Vehicle {
 struct Train: Vehicle {
     var name: String
     var color = "white"
+    var delay  = 0 // nicht im protocol
+    func delayed(minutes: Int) -> Train {
+        var train = self
+        train.delay = minutes
+        return train
+    }
+    
 }
 
 struct ICE: Vehicle {
@@ -30,10 +37,13 @@ struct Bike: Vehicle {
 #Playground {
     var greeting = "Hallo Playground"
     var bike = Bike.trek
-    var train = Train(name:"TGV")
+    var train = Train(name:"ICE")
     bike.description
     bike.description = "Mein Rad"
     bike.description
+
     train
+    train.delayed(minutes: 23)
+    
     // write code here
 }