[kec]

Garbage collection was deprecated almost immediately after it was released and has never been supported on iOS (which let’s be honest is the target for 95% of all cocoa developers)

[xhruso00]

Be careful, Cocoa is Mac, UIKit is iOS. Most of iOS developers have minimum Cocoa experience.

[kec]

Cocoa is more fundamental and exists in both (although branded as “CocoaTouch” on iOS originally).

The UIKit analog on macOS is AppKit.

Also GC/Arc aren’t features of cocoa, but of Objective-C itself.

[rdsnsca]

ARC was added to get ready for Swift.