What's better, an empty non-nullable string or a null and nullable string?

Every Employee has a name, but not necessarily a boss. The CEO, at least, doesn't have one.

We then have two options. We could pinch our nose at using String? and minimize its use by writing String boss

class Employee {
  String name;
  String boss;
}

but that means that boss will sometimes be an empty string.

Or we could use String?

class Employee {
  String name;
  String? boss;
}

and pinch our nose at the continuing use of null to signal the lack of a boss.

What's better, an empty non-nullable string or a null and nullable string?

This is a sequel to an earlier question.

from Recent Questions - Stack Overflow https://ift.tt/3CqJ7Fy
https://ift.tt/eA8V8J