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iOS Swift Basics (retired) Control Flow Comparison and Logical Operators

Shiv Bhatia
Shiv Bhatia
1,760 Points

I'm using Swift 2.0, and when I try to use the NOT operator (!) it tells me that it's not a recognised operator.

Is this an update? If so, what is the right operator?

2 Answers

"!" is definitely still an operator. In what context are you using it? If you try something like

cat != dog

in your playground, the results panel will show true.

Shiv Bhatia
Shiv Bhatia
1,760 Points

I was using an 'if else' statement to check if a number was divisible by 3 and not 5, 5 and not 3, and then 3 and 5. It was the FizzBuzz generator from Swift Basics, and it looked like this:

if num % 3 == 0 && ! num % 5 == 0 { //Fizz } else if ! num % 3 == 0 && num % 5 == 0 { //Buzz } else if num % 3 == 0 && num % 5 == 0 { //FizzBuzz } else { //Print num }

It kept showing me an error saying '!' was not a valid binary operator, or that it 'expected a { after if condition.'