Question

I need to write a function which returns a string which should be unique for each state of the object.

i.e. if any of the instance variables are changed, then this method should return another string which should be unique for the given set of instance variables of object.

Similarly I would later require write another method which represents unique static state of the class.

Please suggest any efficient ways to achieve my requirement.

Thanks,
Harish

Answer 1

If you want to track the changes to a given object’s state (in its own boundary), this is achievable with a bit of coding or adopting an already implemented approach. Is that what you are asking? What does make using an incrementing serial number inappropriate in your case?

If you are about to guarantee uniqueness amongst all the existing instances of a given class, this is a bit hard. You might need to distinguish an object individually, then asking each object for their unique string representation.