Can you upcast in objective-c and how?

Can you upcast in objective-c? if so how?

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C# example:

"Asset" is the base class.

Stock msft = new Stock(); 
Asset a = msft;            //开发者_如何学Goupcast

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You mean typecast a subclass object to the type of a superclass? Sure - Objective-C has very liberal typecasting rules, just like C.

Superclass *superclassObject = (Superclass *)subclassObject;