Interview guides / ios
KVO and Modern Alternatives: iOS Interview Question
KVO and Modern Alternatives interview question with a clear example answer for iOS engineers. Practice with AceMobileInterview.
This is a common iOS interview topic: KVO and Modern Alternatives.
Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.
1.What is KVO and what replaced it in many Swift codebases?
KVO observes Obj-C property changes. Prefer Combine, Observation/@Observable, delegates, or closures for Swift-first code. KVO still appears with AVFoundation and legacy APIs.
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