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 Blog Reader iPhone App Getting Data from the Web Mutable vs Immutable

NSMutableArray

Create an NSMutableArray object called 'elements'. array should have 0 capacity.
How do i do this?

4 Answers

NSMutableArray * elements = [NSMutableArray array];

You'll want to allocate and initialize an empty NSMutableArray. If you're still confused, you should take another look at the video related to the code challenge.

Jayden Spring
Jayden Spring
8,625 Points

NSMutableArray *elements = @{};

Using the following will create an empty array, no need to set the capacity to 0.

NSMutableArray *elements = [NSMutableArray array];