From: Philip K. Warren <pkw@duke.edu>
  To  : 
  Date: Mon, 26 Apr 1999 17:48:29 -0400

Re: instanceof

Just a quick question on instanceof.  Within the observable class, you have
the option of passing an optional "Object arg" to all of the observers.  Is
it ok to use the instanceof in those places to tell what was passed as an
argument, or should we not use this functionality at all?

-- Philip