I tried using blocks today, to no avail.

This didn't work:
                NSNotificationCenter.defaultCenter.addObserverForName 
"kDocSetSelection
Changed", object:nil, queue:nil, usingBlock:Proc.new{ |notification|
                        NSLog("notified")
                }

But this did:
                NSNotificationCenter.defaultCenter.addObserver(self, selector: 
"handleM
e:", name: "kDocSetSelectionChanged", object: nil)

I found http://www.macruby.org/trac/ticket/760 that hinted MacRuby does impleme
nt blocks, but also had references to BridgeSupport. I installed the preview-3 
version; what would be the reason the above didn't work?

Thanks.

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