Swift Averages

average.swift

func sumOf(numbers: Int...) -> Int {
    var sum = 0
    for number in numbers {
        sum += number
    }
    return sum
}
sumOf()
sumOf(42, 597, 12)

func averageOf(numbers: Int...) -> Int {
    var sum = sumOf(numbers)

    return sum / numbers.count
}

averageOf(1, 2, 3)

Trying to extend some code from Apple’s sample. I get this error:

Could not find an overload for '__conversion' that accepts the supplied arguments

Is it not possible to pass variable arguments from one function to another that also takes variable arguments?

OK, I fixed it by making a third function that just takes a regular ol’ array of Ints:

func arraySum(numbers: Int[]) -> Int {
    var sum = 0
    for number in numbers {
        sum += number
    }
    return sum
}

func sumOf(numbers: Int...) -> Int {
    return arraySum(numbers)
}

func averageOf(numbers: Int...) -> Int {
    var sum = arraySum(numbers)

    return sum / numbers.count
}

What about [0,0,0,0,5].avg//1

Should be 5 no?