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

Posted by Victoria M
Victoria M
8,730 Points

Stuck on task 2

Can any one see why my code is not working for the second part of the task?

Thanks!

import Foundation

// Add your code below
func fetchTreehouseBlogPosts (completion: ((NSData!, NSURLResponse!, NSError!) -> Void)) { }

   let blogURL = NSURL(string: "http://blog.teamtreehouse.com/api/")
   let requestURL = NSURL(string: "get_recent_summary/?count=20", relativeToURL: blogURL)

   let request = NSURLRequest(URL: requestURL!)

   let config = NSURLSessionConfiguration.defaultSessionConfiguration()
   let session = NSURLSession(configuration: config)

   let dataTask: NSURLSessionDataTask = session.dataTaskWithRequest(request) {
      (let data, let response, let error) in    
         completion(data, response, error)
  }
  dataTask.resume()
}
Richard Lu
Richard Lu
20,185 Points
Richard Lu
Richard Lu
20,185 Points

I've formatted your code for better readability.

1 Answer

Richard Lu
Richard Lu
20,185 Points
Richard Lu
Richard Lu
20,185 Points

Hey Victoria,

You're missing the return type of void inside your closure

import Foundation

// Add your code below
func fetchTreehouseBlogPosts (completion: ((NSData!, NSURLResponse!, NSError!) -> Void)) { }

   let blogURL = NSURL(string: "http://blog.teamtreehouse.com/api/")
   let requestURL = NSURL(string: "get_recent_summary/?count=20", relativeToURL: blogURL)

   let request = NSURLRequest(URL: requestURL!)

   let config = NSURLSessionConfiguration.defaultSessionConfiguration()
   let session = NSURLSession(configuration: config)

   let dataTask: NSURLSessionDataTask = session.dataTaskWithRequest(request) {
      (let data, let response, let error) -> Void /* right here */ in    
         completion(data, response, error)
  }
  dataTask.resume()
}