What's the point of IsA() in C++?

Question

I\'m trying to figure out why some code bases use IsA() to determine object polymorphism if in C++ you can already safely upcast and down cast (using dynamic_cast) ?

So

Answer 1

In modern C++ there is no point.

Frameworks dating from before the 1998 standardization may offer an IsA function.

E.g. as I recall there is such functionality in MFC.

Also, as you note, when dealing with objects implemented in other languages (with types not represented by C++ types) it may conceivably be useful.

Cheers & hth.,