Filip Konvička wrote:
Yes, the cell's value is logically "backtracked" as well as everything
else when you reach the second choice. This is because "choice" creates
computational spaces, try reading chapter 12 of the language tutorial.
Oh, wow! You can backtrack an... assignment!?!?
OK, so how would you actually approach this problem then??
I'd have thought that some kind of state would be the way to go, at
least for something non-concurrent. (I had also tried using a global
dictionary, using the parse level as the key, but the system kicked it
out saying I couldn't set a global value from a local procedure, or some
such. Fair enough, but what are the options?)
I'd really be curious to see the elegant Oz solution to this, which,
after all, is a reasonable simulation of a real-world spec!
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