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Lead Ios Engineer Interview Questions

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4,728 lead ios engineer interview questions shared by candidates

- Unit testing XC - Someview - Actors - Combine - Required init , init , convient init - Size classes - Content hugging and compression resistance - [Weak self] can we use others as well - Lazy keyword - use of it in real life scenario - Protocols with @objc can be used with structure - Can we define stored and compatible property in enum - Generic cab be specified with - Caseiterable in enum - ViewModel should be structure or class , also in which case it should be class - Difference between public and internal modifier - What is class function vc static function - In Generics can we change T type to some other character - What’s new in Swift 5 - How to create own higher order functions
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Senior IOS Developer

Interviewed at Virtusa

3.7★
Mar 3, 2023

- Unit testing XC - Someview - Actors - Combine - Required init , init , convient init - Size classes - Content hugging and compression resistance - [Weak self] can we use others as well - Lazy keyword - use of it in real life scenario - Protocols with @objc can be used with structure - Can we define stored and compatible property in enum - Generic cab be specified with - Caseiterable in enum - ViewModel should be structure or class , also in which case it should be class - Difference between public and internal modifier - What is class function vc static function - In Generics can we change T type to some other character - What’s new in Swift 5 - How to create own higher order functions

One important question they asked me was “Can you explain a challenging iOS project you worked on and how you solved the difficulties you faced?” I spoke about optimizing a UICollectionView with thousands of images. I explained how I used efficient caching, background processing, and performance tuning to ensure smooth scrolling and a better user experience.
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Junior IOS Developer

Interviewed at Innovana Thinklabs

3.5★
Sep 1, 2025

One important question they asked me was “Can you explain a challenging iOS project you worked on and how you solved the difficulties you faced?” I spoke about optimizing a UICollectionView with thousands of images. I explained how I used efficient caching, background processing, and performance tuning to ensure smooth scrolling and a better user experience.

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