Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!njin!princeton!udel!wuarchive!uunet!motcid!bachww
From: bachww@motcid.UUCP (William W. Bach)
Newsgroups: comp.object
Subject: Re: ADT vs. Objects
Message-ID: <5258@oak10.UUCP>
Date: 14 Nov 90 19:03:24 GMT
References: <4255@oasys.dt.navy.mil>
Organization: Motorola Inc., Cellular Infrastructure Div., Arlington Heights, IL
Lines: 18

flitter@atisun.dt.navy.mil (Lance Flitter) writes:


>   Greetings. I was wondering if someone would venture a good description
>of the difference between Abstract Data Types and Objects. Is there a
>difference? Is one a subset of the other?

Abstract Data Types require barbarian procedures to rape the structure
and plunder the data.  Objects are well behaved and courteously ask each other to carry their intended wished.  At least this is kind of what Dan Ingalls
said back in 81...

[ING81] Ingalls, Daniel H., "Design Principles Behind Smalltalk,"Byte, 
August 1981.


Bud Bach
-- 
Bud Bach
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