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Start your free trialSam Belcher
3,719 PointsExtending Generic Types
Hi, this lesson was really hard for me to understand and I don't know what to fix in my code, or if my logic is at all correct. Thanks!
protocol PrefixContaining {
func hasPrefix(_ prefix: String) -> Bool
}
extension String: PrefixContaining {}
// Enter code below
extension Array where Element: PrefixContaining {
func filter(byPrefix prefix: String) -> [Element] {
var newArray: [Element] = []
for item in self {
if item.hasPrefix(prefix) {
newArray.append(item)
}
}
return newArray
}
1 Answer
Heidi Puk Hermann
33,366 PointsHi,
your logic seems fine, but you are missing a closing curly bracket at the end... It is more clearly to see, if you indent the function.
extension Array where Element: PrefixContaining {
func filter(byPrefix prefix: String) -> [Element] {
var newArray: [Element] = []
for item in self {
if item.hasPrefix(prefix) {
newArray.append(item)
}
}
return newArray
}
/*missing a closing bracket here*/
Sam Belcher
3,719 PointsSam Belcher
3,719 PointsThanks a lot!