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iOS Swift Functions and Optionals Optionals Exercise: isDivisible function

Adrian Yeow
Adrian Yeow
13,866 Points


My question is this. i don't understand this concept.

if let result = isDivisible(dividend: 15, divisor: 14) { println("Divisible") } else { println("Indivisible") }

The else statement "Indivisible" will be printed on the screen. However if we look closely the function isDivisible(dividend: 15, divisor: 4) should evaluate to false or nil. if it is false or nil, the constant result would be evaluated to false and the following code shouldn't be executed.

1 Answer

func isNotDivisible(#dividend: Int, #divisor: Int) -> Bool { if dividend % divisor == 1 { return true } else { return false } }