Can you upcast in objective-c and how?

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

C# example:

"Asset" is the base class.

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

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;