I've developed a clone_ptr class that performs a clone of an abstract pointer without the need for a clone method.
How can you correctly do a clone when an interface does not have a clone method and you don't know the concrete type ? Also, what do you provide for class that have a clone method that is named differently (Clone is another often used function name at least in Active X (COM) programming)
See following link for more info: http://code.axter.com/clone_ptr_introduction.htm
Well, some functions are not exception safe or does not follows accepted rules like the one in (More) Exceptional C++ books. In particular, it is generally not safe to destroy an object and construct another one. What will happen if the object cannot be constructed and the original object is already destroyed. Will you have a clone_ptr that reference an invalid object. Philippe