Senior iOS Developer Interview Questions

What is difference between value type and reference type?
What is difference between class and structure in Swift?
What is autorelease pool?
What is runloop?
What is NSManagedObject?
What is NSManagedObjectContext?
Explain @Published macro.
What is ObservableObject?
What is dynamic dispatch?
Difference between static and dynamic framework.
What is MVC?
What is Thread Sanitizer?
What are different ways of implementing concurrency in iOS?
What is publisher in Combine?
What is subscriber in Combine?
What are different types of publishers?
What are different methods of publishers?
What is the difference between a global queue and a serial queue?
How to see what dynamic frameworks an executable depends on?
How to see whether a framework is 'embedded' or not while adding it as a dependency?
What is dynamic loader/linker?
What is static linker?
What is a view modifier?
What is a geometry reader?
What is Auto Layout?
What is a size class, and what types of size classes are there?
Can we have multiple contexts while using a single Core Data database?
What is copy-on-write?
Explain Codable.
Explain Sendable.
Explain Equatable.
What is CustomStringConvertible used for?
How can we make a singleton type safe?
What is an Actor in Swift?
Explain the usage of async and await.
What is a retain cycle?
How to detect a retain cycle?
What are on-demand resources in Xcode?
What is OSLog?
Where do you save API keys in an app?
Can you explain the factory pattern with an example?
Can you explain the adapter pattern with an example?
Can you explain the iterator pattern with an example?
Demonstrate usage of the Sequence protocol.
Demonstrate usage of the Hashable protocol.
How to prevent users from taking screenshots of a particular screen in iOS?
What is URLSession?
How does prefetching in a CollectionView data source work?
What is the keyset paging approach to handle pagination?
What is LocalizedStringResource used for, and why use it in App Intents?
What is Address Sanitizer and Thread Sanitizer?
What is the @Namespace property wrapper in SwiftUI?