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Start your free trialVenkata Harish Mullapudi
Courses Plus Student 46 PointsI wrote a piece of code and it works in the Xcode playground. But the Challenge question keeps complaining
func transform<T,U>(array arg: [T], transformation: (T) -> U) -> [U] { var array : [U] = [] for value in arg { array.append(transformation(value)) } return array }
//Test with this function func square(_ a: Int) -> Int { return a * a }
transform(array: [1,2,3,4], transformation: square)
func transform<T,U>(array arg: [T], transformation: (T) -> U) -> [U] {
var array : [U] = []
for value in arg {
array.append(transformation(value))
}
return array
}
1 Answer
Jeff McDivitt
23,970 PointsYou are very close, not sure why you are including "arg" as I believe that is throwing you off. Also you need to return the new array
func map<T, U>(array: [T], transformation: (T) -> U) -> [U] {
var newArray = [U]()
for values in array{
newArray.append(transformation(values))
}
return newArray as! [U]
}
Jeff McDivitt
23,970 PointsJeff McDivitt
23,970 PointsAnd the function is called map not transform :)