On Apr 16, 2010, at 11:00, Kyle Sluder wrote:

> And this is when I become a fan of splitting the "model" layer into a
> "model object" layer and a "model controller" layer.

I think that in this case, if the auto-updating can *safely and correctly* be 
encapsulated within a single object, then it's preferable and simpler just to 
do so.

However, I think I'd agree even in this case, that a public [myModel 
updateResources] method is preferable to [[myModel someParticularObject] 
updateResources], so that it's a private implementation detail precisely where 
in the model the update is done. That would be a small but very appropriate use 
of the Sluder Splitting Principle.


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