Use of IS

Newcomers to Astrobe and Oberon are welcome to ask any beginner-level questions here
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alain
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Joined: Tue Jan 04, 2011 9:28 pm

Use of IS

Post by alain » Thu Jan 13, 2011 9:08 am

not so clear :idea: for me the use of IS
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Alain

cfbsoftware
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Re: Use of IS

Post by cfbsoftware » Thu Jan 13, 2011 12:49 pm

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.

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