Michael Schnell schrieb:
BTW.: Re. COM / CORBA / ORB
Is there a decent way to describe the internal *Language-concept*
(Interface, Interfaced object, ....) (i.e. keywords, syntax, features,
usability...) independently of paradigms dictated by the environment the
executable is supposed to run in and that might provide some useful
parameters to the IDE when designing the program ? Based on this, COM /
CORBA / ORB might be described as specializations of the concept.
Simply forget about COM/CORBA ;-)
As already mentioned, Delphi interfaces are the workaround for the
missing multiple inheritance in OPL, as known from many languages
(Java...). Everything else IMO is language/implementation specific.
The lifetime of interfaces and their underlying objects is managed by
reference counting in OPL. IMO this is essential for safe use of
interfaces, because no holder of an interface reference can know when
the underlying object can or should be destroyed.
DoDi
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