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Start your free trialKenan Bateman
16,715 PointsString Extension Challenge
For this challenge, I'm not sure why this is not compiling and what the answer would be. I attached my code below.
Confused since if I take things out of the function they work.
This returns the integer 5....but when it goes inside a function, the compiler starts looking for it to be unwrapped.....no clue what I'm not noticing. Any help would be appreciated.
let textAsInt: Int? = Int("5")
extension String {
func add(value: Int) -> Int? {
let textAsInt: Int? = Int(self)
return textAsInt + value
}
}
2 Answers
Jeff McDivitt
23,970 PointsHi Kenan -
I completed the task using guard (see below)
extension String {
func add(value: Int) -> Int?{
guard let convertedNumber = Int(self) else{
return nil
}
return convertedNumber + value
}
}
"1".add(value: 3)
Kenan Bateman
16,715 PointsThanks Jeff.....duh....not sure why I didn't think about the guard statement