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iOS Build a Weather App with Swift Managing Complexity Callback Methods With Closures

Ante Konjevic
Ante Konjevic
4,691 Points
Posted by Ante Konjevic
Ante Konjevic
4,691 Points

I get an error saying to check syntax. As far as I can tell the syntax I have entered is correct. I have no idea...

I use a typealias for the closure signature and a correctly named function with (completion: BlogPostCompletion) as a parameter. I am really confused as to why it is failing.

Callbacks.swift 
import Foundation

// Add your code below
typealias BlogPostCompletion = (NSData!, NSURLResponse!, NSError!) -> Void

func fetchTreehouseBlogPosts (completion: BlogPostCompletion) {

}

1 Answer

thomascawthorn
thomascawthorn
22,986 Points

Hmm, I'm not sure I can offer much help on this one - haven't got that far int his course :o

Does this answer help out at all?

Ante Konjevic
Ante Konjevic
4,691 Points
Ante Konjevic
Ante Konjevic
4,691 Points

Yeah that worked, but for no good reason. It just required an added set of parenthesis around the typealias declaration, which is not even required in swift. I think the exercise should be updated accordingly.

Thank you for your response.