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john lau
3,471 PointsMake sure you return the result of applying the function argument on self
that's not what Im doing for sure
// Enter your code below
extension String {
func transform((String) -> String) -> String {
return self
}
}
1 Answer
Caleb Kleveter
Treehouse Moderator 37,862 PointsFirst off, it looks like you missed the parameter label for the method's closure parameter.
About your question on applying the closure to self. To apply a method or function to a variable means to pass the variable into the method/function as a parameter. For example, when you use the print function, you are applying that function to whatever you print with it:
print("Hello World")
// Applying `print` to the string, "Hello World"