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Benjamin Cooper
3,162 PointsWhy does the challenge not work in actual 2.0 swift?
For some reason the filter function won't work when the array is written as [1...50]. I was wondering why that is. It will work if I write the actual numbers out within the array. Can someone tell me how I would have to write out the code, so I can use the filter function when the array is written as [1...50]. Thanks!
Ben
3 Answers
Martin Wildfeuer
Courses Plus Student 11,071 PointsTo be honest, I am not sure if you ever could initialize an int array like this [1...50], being it Swift 1 or 2.
What this is rather doing is creating an array of ranges with one single range in it.
// This
let rangeArray = [1...10]
// is inferred to
let rangeArray: [Range<Int>] = [1...10]
// and thus can be used as
let rangeArray = [1...10, 1...5, 1...2]
You can, however, achieve what you want by initializing your array this way:
let intArray = [Int](1...10) // [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Hope that helps :)
Jason Anders
Treehouse Moderator 145,860 PointsFrom what I've read and hear, MUCH of what was in Swift is now deprecated in Swift 2.0. I'm not completely certain as I've just recently started Swift 2.0, but I have read that basically everything learned in Swift will not be applicable in Swift 2.0.
:)
Carson Carbery
9,876 PointsThe pre Swift2.0 filter functionality has been depricated, so its not possible to answer this question using Swift 2.0 playground code. Instead if should be written :
let oddNumbers = numbers.filter(isOdd)