On Jul 11, 2005, at 9:16 AM, Ingo Blechschmidt wrote:

  class Foo {}
  class Bar is Foo {};    # true;     # false;       # true;       # true
  # These are clear, I think.

Yes, these all make sense to me.

  Bar.isa(Object);        # true
  Bar.isa(Class);         # true
  Bar.isa(Foo);           # ? (my guess: false)
  Bar.isa(Bar);           # ? (my guess: false)

I am not sure about this. I think that .isa as a class method should behave much as it does for an instance method. If we start supporting things like Bar.isa(Class) then we start exposing the soft underbelly of the meta-model to the outside world. Which IMO might not be a good idea.



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