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inheriting data slots
A question I've had about self since I read the self intro paper in
OOPSLA is how you inherit data slots. I read the Organizing Programs
Without Classes paper, and that sort of answered it, but I want to
make sure that I'm not missing anything...
Using an extra parent slot (like dataParent in the example in the
paper), you model data inheritance by copying a list of prototypes
when you clone an object. That would be these slots in a traits
dataParent: arg = ().
copy = (| new. |
new dataParent: dataParent copy.
Then, for each object inheriting those slots that wanted to inherit
data from an object 'o', you just define a slot:
dataParent** <- o.
By doing this, I'm trying to share some format information as well as
behavior. Is there a better way to do this, or is this 'the right