I tried to find a concise explanation of the Law of Demeter, and my brain melted.

The best I could find was wikipedia's entry on law of demeter.

"More formally, the Law of Demeter for functions requires that a method called from an object may only invoke the methods of the following kinds of objects:
  1. itself
  2. its parameters
  3. any objects it creates/instantiates
  4. its direct component objects
In particular, an object should avoid invoking methods of a member object returned by another method."

There is TONS written about LoD when googled, but nothing that gave me a real "aha" feeling. It all left me wondering, is this real insight, or cargo cult programming?

Hopefully the above definition will help a bit.

thomas.

In reply to Definition of Law of Demeter by tphyahoo
in thread Are lvalue methods (as properties) a good idea? by jplindstrom

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