Nested subcompartments in OCI has been introduced more than one year ago. So frankly speaking feedback about my course was valid. Yes, it should have proper code for nesting all of the examples somewhere in a subcompartment structure instead of the root compartment. Recently I have fixed the code for each and every lesson. Here is a video on how to use it in practice (lesson1). A pinch of spices for our dish! 🙂
Martin, The Cook.