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From: grover%brahmand@Sun.COM (Vinod Grover)
Newsgroups: comp.object
Subject: Inheritence and Delegation
Message-ID: <126109@sun.Eng.Sun.COM>
Date: 10 Oct 89 21:53:52 GMT
Sender: news@sun.Eng.Sun.COM
Lines: 44

I recieved a number of replies concerning my query about Inheritence and
Delegation. They are given below for anyone else interested.
================
From: rkr@june.cs.washington.edu (R. K. Raj)
    Henry Lieberman, "Using Protypical Objects to Implement Shared Behavior
    in Object Oriented Systems", Proceedings of the ACM Conference on
    Object-Oriented Programming Systems, Languages and Applications,
    pages 214-223, Sep 1986
    
    Lynn Andrea Stein, "Delegation Is Inheritance", Proceedings of the
    Second ACM Conference on Object-Oriented Programming Systems, Languages
    and Applications, pages 138-146, Oct 1987
    
    Markku Sakkinen, "Disciplined Inheritance", Proceedings of the Third
    European Conference on Object-Oriented Programming, pages 39-56, Jul
    1989

From: swami@cssuN.tamu.edu (Swaminathan Natarajan)
    One paper that describes delegation, though probably not the original paper,
    is: "Dimensions of Object-based Language Design" by Peter Wagner, in OOPSLA
    87 proceedings.

From: dumbcat!marc (Marco S Hyman)
    See the article ``Genericity vs Inheritance vs Delegation vs Conformance
    vs ...'' by Blair, Gallagher, and Malik in the Sept/Oct 1989 issue of the
    Journal of Object-Oriented Programming.  (Computer Literacy has it if you're
    in the Bay Area.)  It says ``Inheritance can be viewed as a specialization
    of delegation in which the entities that inherit are classes.''

From: landauer@morocco (Doug Landauer)
    One decent paper that describes one way of looking at inheritance vs
    delegation is in OOPSLA '87 -- by Lynn Andrea Stein, "Delegation Is
    Inheritance".  (Also == SIGPLAN Notices 22(12), December 1987.) This
    has some examples showing the differences, and then a proof that a
    delegation hierarchy (actually, a DAG) can always be modeled by some
    inheritance hierarchy, and vice versa.

    SELF is an example of a (Smalltalk-like) language which uses delegation
    instead of inheritance -- See "Self:  the Power of Simplicity", also in 
    OOPSLA '87, by Ungar & Smith.
================

Vinod Grover
grover@sun.com