🚀 go-pugleaf

chip@ateng.UUCP (Chip Salzenberg) writes:
| Objective-C supports _heterogoneous_ collections.  For example, a
| single Set can hold another Set, a Dictionary, an Array, and any number of
| other types -- _simultaneously_.

The other important feature that object-oriented systems need
(Objective-C has it, I don't know of C++ does) is that one can build
two objects that present the same external interface, but for which
the method-routines are different.  I.e., I can have two different
sorts of "dictionary", implemented differently, and the code that uses
them can't tell the difference between them.  (This is why you need
run-time mapping from method-names to routines.)

Dale
-- 
Dale Worley    Cullinet Software      ARPA: culdev1!drw@eddie.mit.edu
UUCP: ...!seismo!harvard!mit-eddie!culdev1!drw
If you get fed twice a day, how bad can life be?