[Boost-users] any_cast on polymoprhic types?

From: Gross, Steve (SGross_at_[hidden])
Date: 2007-08-14 14:34:02

Is there a way to use any_cast for polymorphic types? For instance,
let's say I've got a Base class and a Derived class. I want to be able
to any_cast a Derived * to a Base * successfully, like so:

class Base { virtual ~Base() {} };
class Derived : public Base { virtual ~Derived() {} };

Derived d;
boost::any a = &d;
boost::any_cast<Base*>(a); // Will NOT throw an exception

Thanks!
--Steve