Class Variables: DependentsFields an IdentityDictionary
Go Dwight! I'd vote that we *avoid* these bare type declarations, myself. If you are going to define a class variable, it would be nicer to declare what the variable is actually used for:
DependentsFields maps each object to its dependents. Useful for objects that do not have an explicit dependenst field, so that all objects may take part in the dependency mechanism. See Object>>dependents and its senders.
Usually you can trace the definers-of to figure out what the class is, if you really need to know. In this case there are 6 references and one assignment, and the assignment makes it pretty clear what the class is. You *can't* do such a search to figure out a programmer's intent.
Also, such an easy case is *really* easy for an automatic type inferencing tool, and hopefully Squeak will eventually be eventually equipped with such a tool. (plug plug)
Lex