I was looking at some existing code and stumbled across a variable declaration I didn\'t understand:
public foo as Boolean?
What does the quest
aah, no sooner did I post the question that I realised that it may signify that it can be nullable.
I tested in code and that seems to be the case.
It means a nullable Boolean.
Boolean?, or any other value type (number or struct), is shorthand for Nullable(Of Boolean).
Boolean?
Nullable(Of Boolean)