Usually you can't assign null to value types, such as int, bool, DateTime, etc. You can make them nullable by adding ? symbol after type declaration of variable/field/property:
int? nullableNumber = null;
But does nullableNumber become reference variable?
ref and out parameters are quite similar in their meaning. ref and out keywords are used to pass parameters to a method by reference. By default parameters are being passed to methods by value. Passing reference to variable instead of value means referenced variable might (or must) be modified/assigned by the method accepting this reference. The main difference is out parameters must be set during the execution of the method and ref parameters are not required to be set before returning. But there is more.
Scrum is an agile way to manage a project, usually software development. Agile software development with Scrum is often perceived as a methodology; but rather than viewing Scrum as methodology, think of it as a framework for managing a process.
Scrum is an iterative and incremental agile software development framework for managing product development. It defines "a flexible, holistic product development strategy where a development team works as a unit to reach a common goal", challenges assumptions of the "traditional, sequential approach" to product development, and enables teams to self-organize by encouraging physical co-location or close online collaboration of all team members, as well as daily face-to-face communication among all team members and disciplines in the project.
HTML5 is a markup language used for structuring and presenting content on the World Wide Web. It is the fifth and current version of the HTML standard.
It was published in October 2014 by the World Wide Web Consortium (W3C) to improve the language with support for the latest multimedia, while keeping it easily readable by humans—and consistently understood by computers and devices such as web browsers, parsers, etc. HTML5 is intended to subsume not only HTML 4, but also XHTML 1.
1. Write a method that takes in an input string and returns true if all the characters in the string are unique and false if there is even a single repeated character.
The .NET Framework Class Library is the foundation on which .NET Framework applications, components, and controls are built. The .NET Framework includes classes, interfaces, and value types that expedite and optimize the development process and provide access to system functionality. To facilitate interoperability between languages, most .NET Framework types are CLS-compliant and can therefore be used from any programming language whose compiler conforms to the Common Language Specification (CLS).
LINQ is a set of features that extends powerful query capabilities to the language syntax of C#. LINQ introduces standard, easily-learned patterns for querying and updating data, and the technology can be extended to support potentially any kind of data store. The .NET Framework includes LINQ provider assemblies that enable the use of LINQ with .NET Framework collections, SQL Server databases, ADO.NET Datasets, and XML documents.
Stored Procedures are precompiled objects which are compiled for first time and its compiled format is saved which executes (compiled code) whenever it is called. But Function is compiled and executed every time when it is called. Functions and Stored Procedures serve different purposes.
Agile software development is a set of principles in which requirements and solutions evolve through collaboration between self-organizing, cross-functional teams. It promotes adaptive planning, evolutionary development, early delivery, continuous improvement, and it encourages rapid and flexible response to change. Agile itself has never defined any specific methods to achieve this, but many have grown up as a result and have been recognized as being "Agile".