Intelgic Senior IOS Developer Interview Questions and Answers

ARC stands for Automatic Reference Counting, a memory management system used in iOS development.

• ARC automatically tracks and manages the memory used by objects in an iOS application.

• It adds and removes references to objects based on their usage, ensuring memory is properly managed.

• ARC helps prevent memory leaks and retains cycles by automatically releasing objects when they are no longer needed.

Optional is a type in Swift that represents a value that may or may not exist.

• Optional is used to handle situations where a value may be missing or not yet available.

• Optional variables can either have a value or be nil.

• Optional unwrapping is used to safely access the value of an optional variable.

Implementing real-time chat feature and integrating complex third-party APIs were the most difficult features in my project.

• Implementing real-time chat feature required handling multiple concurrent connections and ensuring message delivery in the correct order.

• Integrating complex third-party APIs involved understanding their documentation thoroughly, handling authentication, and troubleshooting compatibility issues.