Cocoa Design Patterns Guide

How Cocoa Adapts Design Patterns

Early in my career as a professional iOS developer, I was asked several times during job interviews to explain and give examples of design patterns. I am self-taught and wasn’t able to answer properly, so I was rejected a few times. Then I found this document, “Cocoa Design Patterns Guide” by Apple, published in 2005, and it became a pivotal moment for me. I studied it, and from then on, answering interview questions about design patterns was no longer a problem.

Today, someone posted on LinkedIn about the Chain of Responsibility pattern, which reminded me of that document. There is still an HTML version available online. I hope someone will find it helpful. Here is the link: https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/CocoaFundamentals/CocoaDesignPatterns/CocoaDesignPatterns.html#//apple_ref/doc/uid/TP40002974-CH6-SW6