Why ternary operator in swift is so picky?

Question

The question is very simple, but I just could not find the answer!

Why doesn\'t

return x == 0? \"\" : \"Hello\"

compile but

Answer 1

Yes, I'm pretty sure (as you presumed) the problem is with optionals.

I prefer to write my ternary operators like this...

let num = (isTrue) ? (1) : (0)

Of course, you can choose what's in the parentheses, whether it's simply a literal (as shown) or not.