Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Parsing JSON Using Codable Parsing Different JSON Structures Recap: Parsing Different JSON Structures

Monika Kesarwani
Monika Kesarwani
5,851 Points

help in for fill in the blank

In the following JSON sample, the key "imdb_url" can occasionally be missing. Complete the init(from:) method to ensure that we account for missing data. let json = """ { "title": "Tomb Raider", "genre": "action", "imdb_url": "https://www.imdb.com/title/tt1365519" } """.data(using: .utf8)!

struct Movie: Codable { let title: String let genre: String let imdbUrl: String?

enum CodingKeys: String, CodingKey {
    case title
    case genre
    case imdbUrl = "imdb_url"

init(from decoder: Decoder) throws {
    let container = try decoder.container(keyedBy: CodingKeys.self)
    self.title = try container.decode(String.self, forKey: .title)
    self.genre = try container.decode(String.self, forKey: .genre)
    self.imdbUrl = try 


1 Answer