Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Build a Simple iPhone App with Objective-C Creating a Data Model Finishing Up Our Model

Why do we have to import Factbook.h if we already have @class?

Why is it that we have to still import the Factbook.h file to the ViewController if we already said in the ViewController.h file that we wanted @class Factbook; ?

1 Answer

Michael Hulet
Michael Hulet
47,842 Points

Using @class does not automatically make that class available to you. Instead, it's just a promise to the compiler that the file in which that class is declared will be #imported in the corresponding .m file.