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iOS Swift Functions and Optionals Optionals Exercise: isDivisible function

Will Feldman
Will Feldman
3,121 Points
Posted by Will Feldman
Will Feldman
3,121 Points

Would the following code also work?

var state = ""
func isNumberDivisible(#numberOne: Int, #numberTwo: Int) -> Bool? {
    if numberOne % numberTwo == 0{
        state = "Divisible"
        return true
    }
    else {
        state = "Not Divisible"
        return nil
    }
   }

isNumberDivisible(numberOne: 15, numberTwo: 4)
state

1 Answer

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi Will,

Your code works, yes. However, you may find some scope issues in practice as the variable state may not always be visible to the function. In that case, the state variable inside the method would be in a different scope to the one outside of it. That may cause you problems.

On the topic of this challenge, I recalled writing some lengthy posts about it, so I dug those up in case they're of interest to you. Have a look through this post.

Thanks,

Steve.