Ternary operators provide a simple mechanism for applying conditional logic to components that use data-binding.
By nesting ternary operators, you are able to create chains of conditionals that would otherwise only be possible within an AS3 <Script> tag:
Needless to say, this is incredibly powerful.
Although if you need more than two or three nested levels I’d still recommend using a <Script> tag. Otherwise reading through the conditional logic starts to feel a bit like trying to see the sailboat in a Magic Eye picture. 😉