for me the use of IS Regards
Alain
Use of IS
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Re: Use of IS
That is not surprising - the related subject of type extensions is one of the more complex aspects of Oberon. Unfortuantely, I can't hope to explain it in a few sentences here. What I recommend you do is first of all have a look at the source code of the Extensions module in the Astrobe Examples folder to see an example of its use.
After that, read Part 4 "Object Oriented Programming" in Niklaus Wirth's book "Programming in Oberon" which you can download from here:
http://www.astrobe.com/Oberon-07.htm
Note that the subject of the book is Oberon not Oberon-07 so expect there to be a few differences. They should be minimal and hopefully will not cause too much confusion.
After that, read Part 4 "Object Oriented Programming" in Niklaus Wirth's book "Programming in Oberon" which you can download from here:
http://www.astrobe.com/Oberon-07.htm
Note that the subject of the book is Oberon not Oberon-07 so expect there to be a few differences. They should be minimal and hopefully will not cause too much confusion.