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![](https://ecs-static.teamtreehouse.com/assets/views/marketing/shared/community-banner-white-47072046c51352fe6a69f5e691ff5700b28bb11d45197d7bdf066d9ea3f72d0c.webp)
![Harry Stromfelt](https://secure.gravatar.com/avatar/3d98992caedb02befbbe6726796a2664?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Harry Stromfelt
2,985 PointsWhat would happen in the for loop if the data returned from the key "posts" wasn't in the NSDictionary format?
In the for loop we create a new NSDictionary instance, and then I guess assign it the returned bits from the blogPostArray. However this works because I assume that we just know that the original JSON data has the correct format, where the data in the curley brackets after the "Posts" key is also in key:object format. If this wasn't the case what would happen and what could we do?