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A primitive data type in JavaScript is a basic data type that is not an object.
Primitive data types include: string, number, boolean, null, undefined, and symbol.
They are immutable and have no methods or properties.
Primitive values are passed by value, not by reference.
Example: var x = 5; var y = 'hello'; var z = true;
Primitive types are stored in the stack, while objects are stored in the heap.
typeof operator in JavaScript returns the data type of an operand.
It is a unary operator.
It returns a string indicating the data type of the operand.
It can be used to check if a variable is defined or not.
Examples: typeof 42 returns 'number', typeof 'hello' returns 'string', typeof true returns 'boolean'.
I applied via Referral and was interviewed before Jul 2020. There were 5 interview rounds.
I applied via Walk-in and was interviewed before May 2020. There were 3 interview rounds.
I applied via Campus Placement and was interviewed before Apr 2020. There were 4 interview rounds.
I applied via LinkedIn and was interviewed before Jun 2021. There were 2 interview rounds.
Version control is essential for managing code changes and collaborating with team members.
Version control allows for tracking changes made to code over time.
It enables collaboration between team members by allowing multiple people to work on the same codebase simultaneously.
It provides a way to revert to previous versions of code if necessary.
Popular version control systems include Git, SVN, and Mercurial.
I applied via Referral and was interviewed before Apr 2019. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in May 2019. There were 3 interview rounds.
RSpec is a testing tool for Ruby programming language.
RSpec is a behavior-driven development (BDD) framework.
It allows developers to write tests that describe the expected behavior of the code.
RSpec provides a domain-specific language (DSL) for writing tests.
It can be used for unit testing, integration testing, and acceptance testing.
RSpec is widely used in the Ruby community and is considered a standard tool for testi
I recently used the gem 'devise' for user authentication in a Rails project.
Devise is a popular gem for user authentication in Rails applications.
It provides a lot of built-in functionality such as user registration, login, and password reset.
Devise also allows for customization and configuration to fit specific project needs.
Example: I used Devise to create a secure login system for a social media platform.
Example: De...
A module is a file containing Python definitions and statements. A class is a blueprint for creating objects.
A module can have multiple classes and functions.
A class can have multiple methods and attributes.
Modules are used for organizing code and avoiding naming conflicts.
Classes are used for creating objects with similar properties and behaviors.
Modules are imported using the import statement.
Classes are instantiated
The primary feature to test in a train booking system would be the booking process.
Test the ability to search for available trains and seats
Test the ability to select and reserve seats
Test the payment process
Test the confirmation and ticket generation process
Class variables are shared among all instances of a class while instance variables are unique to each instance.
Class variables are defined within the class but outside of any methods.
Instance variables are defined within a class's methods and are unique to each instance.
Class variables are accessed using the class name while instance variables are accessed using the instance name.
Example of class variable: count = 0 (u...
I applied via Naukri.com and was interviewed in May 2019. There were 3 interview rounds.
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