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!
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
Baran Ureten5,749 Points
Why didn't we have to allocate and initiate "Shape" in main.m ??
Don't we need to also include
Shape *shape = [[Shape alloc]init];
in main.m ?
Sam Chaudry25,519 Points
The reason you use alloc in Objective C is that every object that is create needs some memory allocated to it when it it run. So using alloc does exactly this, the use of initialisation or init just gets the object ready when it is run by the main thread i.e. main.m or the main path of execution.
Hope that helps