Programming Kotlin

Dealing with Method Collisions

The Kotlin compiler creates a wrapper in the delegating class for each method that’s in the delegate. What if there’s a method in the delegating class with the same name and signature as in the delegate? Kotlin resolves this conflict in favor of the delegating class. As a consequence, you can be selective and don’t have to delegate every single method of the delegate class—let’s explore this further.

In the previous example, the Worker has a takeVacation() method and the Manager is delegating calls to that method to the Worker delegate. Although that’s the default behavior for delegation in Kotlin, it’s unlikely that any Manager would settle for that; while it makes perfect sense for a Manager to delegate work() ...