Checking equality in complex objects

Hi Experts,

I have a large object(by large, I mean it has many member objects) and need to provide a
isEqaul( ) function to test for equality.  What is the best way to compare equality in large objects.
I read about using hashing.  Can you provide an example?
Thank you.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

evilrixSenior Software Engineer (Avast)Commented:
Why provide an isEqual function? Why not just override the equality test operator? All you have to do is test equality of all the members. Why make it any more complicated that than? For example...
class MyClass
   bool operator == (MyClass const & rhs) const
      return a_ = rhs.a_ && b_ = rhs.b_ && c_ = rhs.c_ && d_ = rhs.d_;
   int a_;
   float b_;
   char c_;
   SomeOtherObj d_;

if(myClass1 == myClass2)
   // they are the same

Open in new window


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
ambuliAuthor Commented:
Thank you evilrix.  I did not think about that.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.