Triple question mark ("???") operator in swift?

Question

Recently I gave an interview and I was asked about triple question mark ??? operator in swift. I didn't know about it so I googled it and can't find anything related. Is there any ??? operator in swift?

Answer 1

There is no ??? operator in Swift (although there is ??, the nil-coalescing operator). That said, Swift allows you to define your own operators, so it's possible that that's what your interviewers were expecting to hear about.