Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!rpi!uupsi!rama!jec
From: jec@rama.UUCP (Judy Chapman)
Newsgroups: comp.object
Subject: Negative Reaction to OOT
Message-ID: <10954@rama.UUCP>
Date: 14 May 91 19:12:57 GMT
Distribution: na
Organization: Scientific Calculations, Fishers, NY
Lines: 50

Here is a co-workers opinion on OOT. I am trying to promote  
the use of OOT - how do I respond to this??
--- co-worker's negative opinion starts here ---

Subj:	Object Oriented Programming Evaluation Ideas.

	List of evaluation criteria for Object Oriented Programming or Design.

	1) Speed.  

	    a) Does the Dynamic linking of data structures to their member 
           functions cause poor speed performance for large magnitudes
           of objects.  

           Possibly compare the access for a simple object about 500,000
           times using a language that dynamically links functions to 
           objects (such as C++), versus an Object Oriented access system
           written using no dynamic function pointing and simple data
           hiding techniques.

        b) Check speed of member function invocation/execution to 
           that of conventional data abstraction mechanisms to establish
           cost of dynamic Object-->Function invocations.

	2) Use of Dynamic Memory.  

	    a) How much memory is wasted on function pointers to functions.
           Is it allocated once per object, or once per object type.  Is
           this compiler dependent ?

	3) What design methods can be used to prevent architects from 
       creating an architecture that compromises the long term success of
       a product.

	4) What are the benefits of Object Oriented Programming.  Are there
       current methods or techniques that can provide the same benefits 
       at lower costs.

	5) During implementation of large systems that depend heavily on modal
       operation, are Object Oriented Programming techniques a large 
       hinderance ?

	There may be more for, but these come to mind for now.

--- end of other person's opinion ---

Thanks in advance for your help.

Judy Chapman
jec@sc.harris.com