Introduction to Coding Guidelines for Cocoa

Developing a Cocoa framework, plug-in, or other executable with a public API requires some approaches and conventions that are different from those used in application development. This is where API naming conventions come in handy, to make the interfaces consistent and clear. There are also programming techniques that are special to—or of greater importance with—frameworks, such as versioning, binary compatibility, error-handling, and memory management. This topic includes information on both Cocoa naming conventions and recommended programming practices for frameworks.

Link: Introduction to Coding Guidelines for Cocoa