VirtusaPolaris Full Stack Software Developer Interview Questions and Answers

Ref and out are both used to pass arguments by reference in C#. Ref is bidirectional while out is unidirectional.

• Ref is used to pass a variable by reference and can be read and modified within the method.

• Out is used to pass a variable by reference and must be assigned a value within the method.

• Ref can be used to pass a variable as an argument to a method and return a value.

• Out is used to return multiple values from a m...read more

Yes, async can be used without await.

• Async functions return a promise, which can be handled without using await.

• Using async without await can be useful for error handling or logging.

• However, it is important to handle the promise returned by the async function.

A property is a value associated with an object, while a variable is a named storage location for a value.

• Properties are accessed using dot notation or bracket notation

• Variables are declared using keywords like var, let, or const

• Properties are defined within an object literal or added to an object dynamically

• Variables can be reassigned to different values

• Example: object.property vs var variableName

Multi-threading allows concurrent execution of multiple threads. Collection framework provides a set of interfaces and classes for storing and manipulating data.

• Multi-threading improves performance by utilizing multiple cores of CPU

• Collection framework provides interfaces like List, Set, Map for storing data

• Java provides synchronized collections for thread-safe operations

• ConcurrentHashMap is a thread-safe implementatio