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
john lau
3,471 PointsMake sure you're declaring a function named transform
the compiler is asking me something have already done
// Enter your code below
extension String {
func transform(aString: (String) -> String) -> String {
return self
}
}
3 Answers
Magnus HÃ¥llberg
17,232 PointsThe challenge say you should omit the external name, that's one problem. The other is that you are only returning self without using the input function, instead you should return aString(self).
john lau
3,471 Pointsthks but doest work anyway
Magnus HÃ¥llberg
17,232 PointsCan you post your updated code? Because I just passed the challenge with this code, your code, with an omitted external name and the return I mentioned in my answer.
extension String {
func transform(_ aString: (String) -> String) -> String {
return aString(self)
}
}
john lau
3,471 PointsI've passed it too, thks anyway