Let’s say I have 2 nullable strings: `a` and `b`. ...

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[wei]

Let’s say I have 2 nullable strings: a and b. I want to check if they are both null or empty or if not, then if they are equal, i.e., if a = "" || a?.isEmpty() and b = null || b.isEmpty() or a == b then I want to return true.
Simply doing a == b won’t work for a = "" and b = null case.
What’s the cleanest way to express this?