Because variables of a given class type X can contain instances whose class type is a subclass of X, the _cast method is needed to access the properties of such instances. For example, if you want to ...

An application of Jack lemma for certain subclass of starlike functions has been discussed. The journal publishes original papers in all areas of pure and applied mathematics. Consists of six ...

Examining the statically-declared (build-time) type of an object may not be an accurate description of the object at run-time. The object variable may actually contain an instance whose type is a ...