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 Refactoring Using Codable Introducing the Codable Protocol

Emil Salmanzadeh
Emil Salmanzadeh
342 Points

Code not working again

There are issues again with the code presented in this video, see below:

class DarkSkyAPIClient

do {
  let weather = try self.decoder.decode(Weather.self, from: data)
  completion(weather, nil)   //ERROR: Cannot convert value of type 'Weather' to expected argument type 'CurrentWeather?'

1 Answer

quoka
quoka
5,266 Points

Change the type of the completion handler from:

(CurrentWeather?, Error?) -> Void

to:

(Weather?, Error?) -> Void