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Marcelo Farjalla
3,241 PointsI can't figure what code is need to pass this challenge.
import Foundation
// Add your code below typealias BlogPostCompletion = ([String: AnyObject]?) -> Void func fetchTreehouseBlogPosts(completion: BlogPostCompletion) { (let data, let response, let error) in
}
The challenge simply says to create a closure method with a completion parameter which has data, response, error as parameters of the closure. The question also mentions I should specify the types as NSData!. etc.... . In the code example we developed for the Weather app I don't see how we stated the type...it seems implied. Need some help understanding how to complete this challenge. Thanks in advance.
import Foundation
// Add your code below
typealias BlogPostCompletion = ([String: AnyObject]?) -> Void
func fetchTreehouseBlogPosts(completion: BlogPostCompletion) {
(let data: NSData!, let response: NSURLResponse!, let error: NSError!) in
}
1 Answer
adrianfraisse
2,467 PointsHi,
I got stuck just like you, then I realized I was trying to reproduce the code we made in the Stormy app, whereas this is not actually what we have been asked to do...
The challenge tells us to provide a closure to our function with NSData!, NSURLResponse! and NSError! as parameters. So basically we are passing a completion handler for later use in our session.dataTaskWithRequest method.
Thus, the correct code is :
func fetchTreehouseBlogPosts(completion: ((NSData!, NSURLResponse!, NSError!) -> Void)) {
}