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iOS Swift Functions and Optionals Optionals Exercise: isDivisible function

Ling Cheng
Ling Cheng
3,168 Points
Posted by Ling Cheng
Ling Cheng
3,168 Points

Can I not use 'if let'?

My cade as follow, I didn't use 'if let', and I still get same result, is that fine? thanks!

func division (first:Int, second: Int) -> Bool? {
    var cal = first%second
    if cal == 0 {
        return true
    }
    return nil
}

if division(6,3) == true {
    println("Divisible")
} else {println("Not Divisible")}

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi there,

I wrote a post some time ago on this point to help another student. It may go some way to explain your question too.

Have a read through this and see if that helps.

Steve.