Physicswallah IOS Developer Interview Questions and Answers

Dispatchers in Kotlin Coroutines are responsible for determining which thread or threads the coroutines should run on.

• Dispatchers help manage the execution of coroutines on different threads.

• There are different types of Dispatchers like Default, IO, Main, and Unconfined.

• Example: launch(Dispatchers.IO) { // perform network operations }

Concurrency design pattern is a design pattern that deals with managing multiple tasks or processes simultaneously.

• Concurrency design patterns help in improving performance and efficiency in multi-threaded applications.

• Examples of concurrency design patterns include Producer-Consumer, Reader-Writer, and Thread Pool.

• These patterns help in avoiding issues like race conditions, deadlocks, and resource contention.

Developed a mobile application for tracking daily water intake and hydration levels.

• Implemented user-friendly interface for inputting water intake

• Integrated notifications for reminding users to drink water

• Utilized database to store and track hydration data

Experienced with technologies such as Java, Swift, React Native, and Firebase for mobile app development.

• Java

• Swift

• React Native

• Firebase

Google Analytics, Firebase Analytics, Mixpanel

• Google Analytics for tracking user behavior

• Firebase Analytics for app performance monitoring

• Mixpanel for in-depth user analytics

Redux is a state management library for JavaScript applications, while local storage is a browser feature for storing data locally.

• Redux is used for managing the global state of an application, making it easier to access and update data across components.

• Local storage is used for storing data locally on the user's device, allowing for persistent data even after the browser is closed.

• Redux is typically used for more com...read more

Caching in React Native allows for storing data locally to improve app performance and reduce network requests.

• Use AsyncStorage for simple key-value pair caching in React Native.

• Implement caching strategies like cache expiration or cache invalidation to manage cached data effectively.

• Consider using libraries like redux-persist for more advanced caching capabilities in React Native.