This was experimental. Do not lose your time with it. Now you know that you should continue :) This was to prove that "kids" could define even texteditor with simple rules.
Stef > Here is the paper: http://www.vpri.org/pdf/m2010002_lobjects.pdf > And you can download the image with the actual active essay from > http://tinlizzie.org/lesserphic2/Text%20Field%20for%20LObject.zip > > I read paper and play with image. And I have not good impression about this > work. > > First they present text with real objects for each letter. Each letter is > actually big object with x, y, predecessor, successor and other attributes. > How much memory such model required? > Do you think that presenting any letter with real object (not just character) > is sufficient for modern computers? I think not. Of course such model > significantly simplified all logic around text layout stuff. But I think it > is too expensive. > > Another thing which I always not agree is introduction scripting languages > inside smalltalk. In paper all layout logic (and editing too) programmed by > "system of rules" in special scripting language (very similar to smalltalk). > If you look deeply you will see that rules call other rules with same way > methods call other methods in basic smalltalk code. So I don't see any value > of rules idea expressed with special scripts. > In spite of my non positive opinion I like what they do inside rules. It is > really simple and understandable code. Maybe I will try reuse something. > > Best regards, > Denis
