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From: jjm@petsd.UUCP (Jim Moseman)
Newsgroups: net.lang,net.lang.st80
Subject: Re: Definition of Buzzwords: "Object-Oriented"
Message-ID: <421@petsd.UUCP>
Date: Wed, 23-Jan-85 11:10:49 EST
Article-I.D.: petsd.421
Posted: Wed Jan 23 11:10:49 1985
Date-Received: Thu, 24-Jan-85 07:28:11 EST
References: <4288@ucbvax.ARPA>
Organization: Perkin-Elmer DSG, Tinton Falls, N.J.
Lines: 17
Xref: watmath net.lang:1287 net.lang.st80:155

I use "object-oriented" to describe a design strategy with the following
characteristics:

   1. The programs's objective is described in terms of one or more higher
level entities (objects).  For example, an algorithm involving a depth first
search of a tree is easier to describe in terms of a stack and its push and
pop operations than in terms of lower level entities such as arrays and
indices.

   2. The implementation of the object and its operations (its representation
and the algorithms which manipulate it) is isolated from the implementation
of other objects and from the algorithms which use the object.  This allows
a 'divide and conquer' approach and simplifies maintenance by limiting the
effect of changes.
 
Jim Moseman @ Perkin-Elmer, Tinton Falls, N.J.
.../vax135/petsd/jjm