Optimum Infosystem React Native Developer Interview Questions and Answers

Q1. Sort an array, hoc components in react Native and flux in react Native
Ans. 
Sorting an array and using HOC components and Flux in React Native
• To sort an array, use the sort() method

• To use HOC components, create a higher-order function that returns a component

• To use Flux in React Native, install the flux package and create actions, stores, and a dispatcher
Answered by AI
Add your answer

Q1. Redux, what is props, what is hooks in react, Native tools and it's working
Ans. 
Answering questions related to Redux, props, hooks in React Native and its tools
• Redux is a state management library for JavaScript applications

• Props are short for properties and are used to pass data between components

• Hooks are functions that allow you to use state and other React features without writing a class

• React Native tools include Expo, React Native Debugger, and Xcode

• Expo is a set of tools and services for bui...read more
Answered by AI
Add your answer

Q1. Tell me about your self.
Add your answer

Q1. Types of job in kotlin coroutine
Ans. 
Types of jobs in Kotlin coroutine include launch, async, withContext, and runBlocking.
• launch: starts a new coroutine without blocking the current thread

• async: starts a new coroutine and returns a Deferred object with a result

• withContext: switches the coroutine context within a coroutine

• runBlocking: blocks the current thread until the coroutine inside it is completed
Answered by AI
Add your answer
Q2. What is Flow, Channel diffrent between StateFlow and SharedFlow
Ans. 
Flow is a cold asynchronous data stream, Channel is a hot asynchronous data stream. StateFlow is a hot asynchronous data stream with a state, SharedFlow is a hot asynchronous data stream without a state.
• Flow is a cold asynchronous data stream that emits values one by one.

• Channel is a hot asynchronous data stream that can have multiple subscribers.

• StateFlow is a hot asynchronous data stream that retains the most recent ...read more
Answered by AI
Add your answer
Q3. If Flow lifecycle aware
Ans. 
Flow lifecycle aware means using Kotlin Flow with lifecycle awareness in Android development.
• Flow lifecycle aware helps manage data streams in Android apps

• It ensures that data emissions are only observed when the lifecycle is in the appropriate state

• Example: Using Flow with LiveData to update UI components based on lifecycle events
Answered by AI
Add your answer
Q4. What is inline function and highorder function?
Ans. 
Inline functions are functions that are expanded in place at the call site, while high-order functions are functions that can take other functions as parameters or return them.
• Inline functions are expanded in place at the call site to improve performance.

• High-order functions can take other functions as parameters or return them.

• Example of high-order function: map() function in Kotlin.
Answered by AI
Add your answer

Q1. Basic react interview question like lifecycle methods and about hooks
Add your answer
Q2. Javascript interview questions like hoisting, closures, function currying and es6 features.
Add your answer
Q3. Function to flatten and sort an array
Add your answer

Q1. Basic scrum related questions
Add your answer
Q2. Challenges faced
Add your answer
Q3. Function to find the occurrences of the word in a string
Add your answer

Q1. Oops based question
Add your answer
Q2. Solid principles and how to implement
Ans. 
Solid principles are a set of five design principles for writing maintainable and scalable code.
• Single Responsibility Principle: A class should have only one reason to change.

• Open/Closed Principle: Classes should be open for extension but closed for modification.

• Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.

• Interfa...read more
Answered by AI
Add your answer

Tata using network layer

Hacker earth test with 29 MCQs and 1 Coding Question

Q1. Basic reactjs Questions with some javascript coding snippets
Add your answer

Q1. Oops , programming, collection, java basic and Kotlin basic
Add your answer

Q1. Basics of Javascript
Add your answer
Q2. Basics of React
Add your answer