How is it possible to invoke a virtual method that wasn't defined?  I.e., I 
have a superclass that declares
   void abc(int) = 0;

What's happening that I can instantiate a child of that class without that 
method defined, and then try to invoke the method? As far as I understand, 
the type system should be preventing that, shouldn't it?

-- 
   Darren New, San Diego CA, USA (PST)
   There's no CD like OCD, there's no CD I knoooow!

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