Use a function to find common elements in two sequences in Swift

Question

I\'m trying to complete the exercise on page 46 of Apple\'s new book \"The Swift Programming Language\". It gives the following code:

func anyCommonElements         


        

Answer 1

I was able to get it to work by making the return value an Array of T.GeneratorType.Element.

func anyCommonElements  (lhs: T, rhs: U) -> Array {
    var toReturn = Array()
    for lhsItem in lhs {
        for rhsItem in rhs {
            if lhsItem == rhsItem {
                toReturn.append(lhsItem)
            }
        }
    }
    return toReturn
}
anyCommonElements([1, 2, 3], [3])