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

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

What's wrong?

I'm pretty sure I've done this correctly. Maybe I'm missing something. There's no errors in the editor, and this kind of thing is happening way to often on Treehouse lately, it's getting a little annoying.

Can someone help please?

Callbacks.swift
import Foundation

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

func fetchTreehouseBlogPosts(completion: BlogPostCompletion) {

}

1 Answer

I've figured it out, it's another weird syntax problem that isn't wrong, but treehouse doesn't like it for whatever reason, I just used this instead:

func fetchTreehouseBlogPosts(completion: ((NSData!, NSURLResponse!, NSError!) -> Void))