ZED Digital IOS Developer Interview Questions and Answers

Q1. Basic of Swift and Objective C
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Q1. Pure Technical Asking about your Project
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Q1. Salary Descussion with HR and normal HR Question
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Q1. What is closure? Life cycle of escaping closure?
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A closure is a self-contained block of code that can be passed around and used in your code. An escaping closure is a closure that is called after the function it was passed to has returned.
• Closure is a block of code that can be passed around and used in your code.

• Escaping closure is called after the function it was passed to has returned.

• Example: Using a completion handler in a network request to handle the response a...read more
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Q2. What is multi threading?
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Multi threading is the ability of a CPU to execute multiple threads concurrently, allowing for improved performance and responsiveness in applications.
• Allows for parallel execution of tasks, improving performance

• Enables applications to remain responsive while performing intensive tasks

• Can lead to synchronization issues if not managed properly
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Q1. Asked basic iOS Developer interview questions
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Q1. I interned here in my second-year summer. I got selected on the basis of resume shortlisting.
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Q2. There was no technical round
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Find second greatest number from an array of duplicate items.

Q1. Arc in swift...
Ans. 
ARC (Automatic Reference Counting) in Swift is a memory management system used to automatically manage memory allocation and deallocation.
• ARC keeps track of how many references there are to an object and automatically deallocates it when there are no more references.

• Use strong reference cycles can lead to memory leaks, so use weak or unowned references to break the cycle.

• ARC is the default memory management system in S...read more
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Q2. Automstic referenc counting
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Automatic Reference Counting (ARC) manages memory in iOS apps, ensuring efficient resource use and preventing memory leaks.
• ARC automatically tracks and manages the app's memory usage.

• Objects are deallocated when there are no strong references to them.

• Use 'weak' references to avoid retain cycles, e.g., delegate properties.

• Example: 'var delegate: MyDelegate?' is a weak reference.

• ARC simplifies memory management compared ...read more
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Q1. Mvvm in swift....
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MVVM (Model-View-ViewModel) is an architectural design pattern commonly used in iOS development to separate concerns and improve code maintainability.
• MVVM separates the user interface (View) from the business logic (ViewModel) and data (Model).

• ViewModel acts as an intermediary between the View and the Model, handling user interactions and updating the data.

• Swift provides tools like Combine framework for reactive progra...read more
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Q2. Model view viewmodel
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