Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Ignacio Opazo
8,950 PointsHi guys, i'm trying to get the last step in this exercise, but i stucked in this part of code...
Hi guys, i'm trying to get the last step in this exercise, but i stucked in this part of code...
extension String { func modify(result: String -> String) -> String { return modify(result) }
}
func firstLetter(letter: String) -> String { for character in letter.characters { return "(character)" } return "" }
//The error occurs here... plz help :(! var value = "Swift".modify(firstLetter)
// Enter your code below
extension String {
func modify(result: String -> String) -> String {
return modify(result)
}
}
func firstLetter(letter: String) -> String {
for character in letter.characters {
return "\(character)"
}
return ""
}
let value = "Swift".modify(firstLetter)
1 Answer
Anjali Pasupathy
28,883 PointsYou're very close! In the modify function you defined in the extension, you're suppose to return the return value of result when applied to the String in question. You can use the keyword "self" to access that String in question. So, rather than returning modify(result), you should return the following:
return result(self)
I hope this helps!
Ignacio Opazo
8,950 PointsIgnacio Opazo
8,950 PointsOMG totally true, i thought the error was in the last line. Thank you very much! You rock Anjali!
Anjali Pasupathy
28,883 PointsAnjali Pasupathy
28,883 PointsYou're welcome! I'm glad I could help! (: