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 Downloading JSON Data Asynchronously Returning JSON

Ben Moore
Ben Moore
22,588 Points

Data Type for Casting JSON Object

In the video, your line

let json = try JSONSerialization.jsonObject(with: data, options: []) as? [String: AnyObject]

Couldn't this also utilize the typealias you created a couple lines before the jsonTask function?

typealias JSON = [String: AnyObject]

So, your final code could simply be shorter and more readable

let json = try JSONSerialization.jsonObject(with: data, options: []) as? JSON