clone method of Object

[Qian Xu]

grauzone wrote:

> 
> class A {
> B b;
> }
> 
> class B {
> A a;
> }
> 
> auto a = new A();
> auto b = new B();
> a.b = b;
> b.a = a;
> 
> Your recursive approach wouldn't quite work with that. Before cloning an
> object, you'll first have to check if the object was already cloned. If
> this is the case, use the previously created clone instead of making a
> new clone.

You are right. This case must be considered separately.