Re: [BLACKBOX] Questions about Inheritance

From: [at]} <Chris>
Date: Thu, 10 Mar 2011 09:01:46 +1030

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>-----Original Message-----
>From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy
>Rainer Neubauer
>Sent: Thursday, 10 March 2011 2:50 AM
>To: BLACKBOX{([at]})nowhere.xy
>Subject: [BLACKBOX] Questions about Inheritance
>
>Hi all,
>the BB heavily relies on OO concepts. Unfortunately I don't
>understand many of them.
>The docu suggests to avoid implementation inheritance and to
>use object composition instead. But what are the language
>features which cause implementation inheritance (i.e. which
>should be avoided) ? Is it just the super call or something else ?
>
>I would appreciate if somebody could give me some hints in
>understanding these things or perhaps some links to
>explanatory texts to read.

To help understand OO concepts in an Oberon-language context I highly
recommend Hanspeter Mössenböck's excellent book: "Object-Oriented
Programming in Oberon-2":

http://www.ssw.uni-linz.ac.at/Research/Books/

I believe it is out of print but Amazon currently has one used and two new
copies.

If you want a taste of what is in the book read his earlier paper with the
same title which was presented at the 2nd International Modula-2 Conference.
It can be downloaded in Postscript format from:

http://www.ssw.uni-linz.ac.at/Research/Papers/Moe91.html

Another book that explictly mentions both implementation inheritance and
object composition is "Component Software - Beyond Object-Oriented
Programming" by Clemens Szyperski (a key contributor to both BlackBox and
Component Pascal):

http://research.microsoft.com/~cszypers/Books/component-software.htm

However, I always hesitate to personally recommend this one as I find it
difficult to comprehend,

Regards,
Chris

Chris Burrows
CFB Software
Astrobe v3.3: ARM Oberon-07 Development System
http://www.astrobe.com

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Received on Wed Mar 09 2011 - 23:31:46 UTC