Why use nil and use a optional bool when we could just say it was false?

Question

I don't get it.

Answer 1 · 2015-01-30T00:49:52Z

January 30, 2015 12:49am

I think it was just for the sake of practicing optional return types. Otherwise I also would have written that function much simpler like this:

func isDivisible(#dividend: Int, #divisor: Int) -> Bool {
    return dividend % divisor == 0
}

Then you could do this:

if isDivisible(dividend: 20, divisor: 2) {
    println("divisble")
}
else {
    println("not divisble")
}

Answer 2 · 2015-02-18T10:11:43Z

February 18, 2015 10:11am

In this case it doesn't matter, but the whole point of the video was to acquaint you with the general idea :-)

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