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 Objective-C Basics (Retired) Advanced Objective-C Dynamic Typing

Posted by arnavthecoder
arnavthecoder
3,453 Points

Dynamic Typing Code Challenge

Hello everyone.

Will someone please guide me through this code challenge? I don't understand how to create a variable and don't understand id. Thank you in advanced.

Thanks,

Arnav

1 Answer

Gabe Nadel
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Gabe Nadel
Treehouse Guest Teacher
Gabe Nadel
.a{fill-rule:evenodd;}techdegree
Gabe Nadel
Treehouse Guest Teacher

Hi Arnav,

If you don't know how to create a variable, I would re-watch earlier videos in the Objective-C basics course. That is a basic building block and you should feel comfortable with that before getting as far as Dynamic typing.

That said, you can create (declare) variables like:

int age; or NSString *favoriteColor;

or both declare and assign a value at once, like: NSString *zipCode = @"97205"; or id faveFood = nil;