Question mark and colon in statement. What does it mean?

Question

What do the question mark (?) and colon (:) mean?

((OperationURL[1] == "GET") ? GetRequestSignature() : "")
         


        

Answer 1

It is the ternary conditional operator.

If the condition in the parenthesis before the ? is true, it returns the value to the left of the :, otherwise the value to the right.