Not sure if I'm missing something, but how does Rc<RefCell<...>> equate to "objective-c before gc/arc"? It seems roughly equivalent, in the same way that smart

Not sure if I'm missing something, but how does Rc<RefCell<...>> equate to "objective-c before gc/arc"? It seems roughly equivalent, in the same way that smart pointers are roughly equivalent: the lifetime is inferred by use, and retaining cycles are a problem. Arc could be a little bit more efficient (which does matter in some ui work), but I don't see how it'd change the use of a framework, and iOS and OSX devs have used objc with arc for years successfully and often happily.