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Hello All,
I have just bought the following book:-
I usually don't buy collections of papers but this is an exception. Parnas is the originator of the concept of "information hiding" - way back in 1972. BTW, information hiding as he originally defined it was way more than just data encapsulation. He talks about designing the concept to be hidden/variable - can include "decisions" - not just data.
It contains a lot of material (somewhat dated) about the ideas that later became object-orientation. Not the least of which is mentioned in GoF in chap 1 as "Consider what should be variable in your design."
It's interesting to see that, while the names have changed, some of these ideas have been around a long time. It deepened my understanding of what an object can actually be.
If you can find a second-hand copy for half price ($20) and have a sense of intellectual curiousity, you might be interested.
Greg Frank
"Change is inevitable. Survival is not." - Charles Darwin
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