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

James Busch
James Busch
12,663 Points
Posted by James Busch
James Busch
12,663 Points

What is wrong with my answer?

The task is to create an NSMutableArray called elements. My answer is:

NSMutableArray *elements = [[NSMutableArray alloc] init];

It says this isn't right. I cannot figure out what is wrong with this.

Thanks, James

2 Answers

Amit Bijlani
STAFF
Amit Bijlani
Treehouse Guest Teacher
Amit Bijlani
Amit Bijlani
Treehouse Guest Teacher

In order to create an NSMutableArray you need to use either [NSMutableArray array] or [NSMutableArray arrayWithCapacity:0];