Shouldn't List().ContainsOnly(List()) return true?

[Johg_Ananda]

I think the answer is in the description of what ContainsOnly() does:

It’s searching for something … and you can’t search an empty list, so its false from the start. It doesn’t matter if you do:
List().ContainsOnly(List("foo")) - this isn’t true because an empty list doesn’t have it
List().ContainsOnly(List()) - this isn’t true either because an empty list can’t have anything in it

Kind of like how zero can be true:

Is the number 0 true?

@Wallace_White you are getting unexpected behavior because Coda is answering a different question than you. You are asking is 0 true? but when you put a singular value into an if statement, Coda evaluates is value blank? This feels more useful, after using Coda for several years, the ability to see if a value exists and to act accordingly … and I understand that other languages have their preferences. Good luck!