The Law of Demeter

Having read about responsibilities, dependencies, and interfaces you are now equipped to explore the Law of Demeter.

The Law of Demeter (LoD) is a set of coding rules that results in loosely coupled objects. Loose coupling is nearly always a virtue but is just one component of design and must be balanced against competing needs. Some Demeter violations are harmless, but others expose a failure to correctly identify and define public interfaces.