iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK

Basic ARC Usage

There are new coding rules and guidelines to follow for projects using ARC. The compiler will enforce the ARC-specific rules, and generate warnings or errors as appropriate:

Create instances of variables and properties as normal, using alloc/init, new, copy, or class methods.

Using retain, release, and autorelease is not allowed. The compiler will automatically insert retain, release, and autorelease for objects allocated in project code at compile time. Note that the inserted statements are not visible.

Use qualifiers for properties ...