OK, two prospects: first, move the lazy attribute to the root Cell class so input Cells can be lazy. Hmmm, does this mean we should make it a slot attribute? Anyway, now here is the real interesting change I am looking at:
<br><br>The domain is Cells with lazy attributes of t, :always, or :once-asked.<br><br>Currently, such lazy Cells, once they do get recalculated on being queried, propagate immediately to callers aka dependents. And have their observers invoked.
<br><br>The proposed change is not to propagate to callers, but to still invoke observers. I think observers cannot be very observant if they are not notified of changes as they happen.*<br><br>Comments? Question?<br><br>
kt<br><br>* I was amused to see a long comment explaining why I was moving caller/dependent notification in front of observer invocation, when in fact the caller notification then was being placed on a queue and then the observers were invoked immediately. Of course observers, where they perturb the model, are supposed to enqueue themselves cooperatively, but still. :)
<br><br>kt<br>