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Senior Ios Engineer Interview Questions
2,086 senior ios engineer interview questions shared by candidates
First round :- Basic questions on swift Class vs struct Protocols Swipe two numbers with our using third variable Second round with techinal Write logic for reverse string He asked react native which I’m not aware
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To describe a scenario in which I had to fix an iOS app having performance issues due to scale, and what did I do to resolve the problem.
After solving the programming problem they tried to dig deeper into Foundation Framework datastructures and their implementation. After I answered those questions, they went deeper into Objective-C runtime questions.
Objective c syntax, singleton code, dispatch work item, atomic non atomic, retain, copy, strong, weak, header imports, @class import
Implement a scaffold of a design system, where you can apply styles to UI elements. Given an example of badly designed code (Network service + View controller) fix it the way you want and implement missing callback action inside the VC. This task was seasoned with some delusional requirements, like what if token storage was not designed to be called multiple times and has to be initialised every time to avoid bugs? How would you implement dependency injection where you don't need to implement mocks with given protocols (some wise man told them to pass function closures instead). What is autorelease pool and how you can use it.
Some very basic iOS q that also shows the level of the dev team
Work on an existing iOS sample project and implement a feature to display news items grouped into sections. The task involved modifying the TableView to support sections and updating the ViewModel to group news items by year before presenting them in the UI.
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