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Generator functions in JS are special functions that can pause and resume their execution, allowing for asynchronous programming.
Generator functions are defined using function* syntax.
They use the yield keyword to pause execution and return a value.
Generators can be iterated over using a for...of loop or by manually calling the next() method on the generator object.
They are commonly used for asynchronous programming, a...
Currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of functions, each taking a single argument.
Currying helps in creating reusable functions and improving code readability.
It allows partial application of functions, where some arguments are fixed and others are left to be provided later.
Example: const add = (a) => (b) => a + b; add(2)(3) will return
apply, call, and bind are methods used in JavaScript to manipulate the context of a function.
apply() - calls a function with a given 'this' value and arguments provided as an array
call() - calls a function with a given 'this' value and arguments provided individually
bind() - creates a new function that, when called, has its 'this' keyword set to the provided value
Implement a retry function in node.js
Create a function that takes a function and number of retries as parameters
Use a loop to call the function and handle errors
Use setTimeout to delay retries if needed
Indexes in MongoDB can have disadvantages like increased storage space, slower write operations, and potential performance degradation.
Indexes can take up additional storage space as they store copies of the indexed fields.
Creating and maintaining indexes can slow down write operations, as the indexes need to be updated whenever the data changes.
Having too many indexes can lead to performance degradation, as MongoDB ha...
I applied via Approached by Company and was interviewed in Dec 2023. There was 1 interview round.
Coding test was good but interviewer was not satisfied and thinking that i was doing cheating
Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class.
Inheritance allows a class to reuse code from another class, promoting code reusability and reducing redundancy.
Subclasses can extend the functionality of the superclass by adding new methods or overriding existing ones.
Callbacks are functions that are passed as arguments to other functions and a...
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I was interviewed in Jan 2025.
I was interviewed in Jan 2025.
A sequence was provided: 4181, 2684, 1597, 987, 610.
first 2 are given and write code for other value calculation using java 8
The second question required writing a reverse of a palindrome using both Java 8 streams. I was able to successfully write both and clear the first round.
Java 17 introduces sealed classes to restrict inheritance and improve code maintainability.
Sealed classes are declared using the 'sealed' keyword followed by the permitted subclasses.
Subclasses of a sealed class must be either final or sealed themselves.
Errors may occur when trying to extend a sealed class with a non-permitted subclass.
Implementation of 'notify me if item is back in stock' feature in an ecommerce application
Create a database table to store user notifications for out-of-stock items
Implement a service to check item availability and send notifications to subscribed users
Provide a user interface for users to subscribe to notifications for specific items
posted on 4 Feb 2025
I was interviewed in Jan 2025.
posted on 6 Jan 2025
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
I applied via Company Website and was interviewed in Nov 2024. There were 13 interview rounds.
Google primarily focuses on pure data structures and algorithms-based questions during coding interviews. Other computer science core topics are typically not covered in Google's interviews. Therefore, it is essential to be proficient in data structures and algorithms to succeed in the Google coding interview.
An aptitude test is a tool used to evaluate a person's skills, abilities, and potential for success in a specific role or activity.
Group discussion is a process of exchanging ideas and opinions among individuals on a specific topic. It is a structured form of communication in which participants have the opportunity to express their views while also listening to others' perspectives on the same subject.
An assignment is a task or piece of work that you are given to complete, particularly as part of your job or studies. The assignment for the course includes written assignments and practical tests, similar to tasks, work, jobs, or charges.
A case study is a detailed description and assessment of a specific situation in the real world, created for the purpose of deriving generalized insights and understanding. It can focus on an individual, a group of people, an organization, or an event, among other subjects.
SCD Type 2 implementation involves tracking historical changes in data by creating new records for each change.
Identify the columns that need to be tracked for changes
Add effective start and end dates to track the validity of each record
Insert new records for changes and update end dates for previous records
Maintain a surrogate key to uniquely identify each version of the record
I can join the team within 2 weeks.
I can start within 2 weeks of receiving the offer.
I need to give notice to my current employer.
I may need to relocate, which could affect my start date.
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