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 Recap: Refactoring Using Codable

Ronald Greer
.a{fill-rule:evenodd;}techdegree seal-36
Ronald Greer
Front End Web Development Techdegree Graduate 56,430 Points

Can Someone provide the answer to the fill in the blank question? i only need one more

Its the question where it asks to create a decoder and convert from a json to an instance of a book. thank you

1 Answer

  • Conform Book to Codable
  • Create and constant of JSONDecoder
  • Decode using Book
import Foundation

struct Book: Codable {
    let name: String

let json = Data()
let decoder = JSONDecoder()

do {
    let book = try decoder.decode(Book.self, from: json)
} catch let error {