API Design for Cocoa and Cocoa Touch

Cocoa and Cocoa Touch feature highly consistent design patterns throughout their APIs. A pattern used in one context is readily available in many other contexts. Build better apps more quickly by understanding these patterns along with the motivations behind their design. Learn about API conventions and guidelines, techniques for extending Cocoa classes, exceptions, errors, performance, thread safety, among other common Cocoa API design patterns.

WWDC 2010 - iOS, macOS