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iOS Objective-C Basics (Retired) Introduction to Objective-C Composition

Baran Ureten
Baran Ureten
5,749 Points
Posted by Baran Ureten
Baran Ureten
5,749 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 ?

1 Answer

Sam Chaudry
Sam Chaudry
25,519 Points
Sam Chaudry
Sam Chaudry
25,519 Points

Hi Baran

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