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Start your free trialSam Belcher
3,719 PointsExtending Generic Types
I'm stuck. Not sure if my logic is correct, and overall this lesson was pretty difficult for me. 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 is spot on, but you are missing a closing curly bracket } at the end. If you indent your code, it is more clearly :)
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
}
/* your are missing a curly bracket here :)*/