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

Jason Teo
Jason Teo
Courses Plus Student 8,398 Points

Create NSMutableArray with 0 capacity?

Why can't I write it this way?

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

1 Answer

I've not tried it but there's a method called initWithCapacity in which you can specify the size of the array. Maybe using that with zero would achieve what you want - the class reference is here.

Jason Teo
Jason Teo
Courses Plus Student 8,398 Points

What is the difference between init and initWithCapacity: 0?

Thanks in advance!