8 GNU Objective-C Features

This document is meant to describe some of the GNU Objective-C features. It is not intended to teach you Objective-C. There are several resources on the Internet that present the language.

© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-12.2.0/gcc/Objective-C.html

• GNU Objective-C runtime API:
• Executing code before main:
• Type encoding:
• Garbage Collection:
• Constant string objects:
• compatibility_alias:
• Exceptions:
• Synchronization:
• Fast enumeration:
• Messaging with the GNU Objective-C runtime: