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C#

A modern, statically-typed language central to the .NET ecosystem.

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Overview

C# is Microsoft's statically-typed, object-oriented language for the .NET platform, used for web backends (ASP.NET), desktop apps, and game development (Unity). It has evolved substantially, adding functional-style features (LINQ, pattern matching) on an object-oriented core.

What it is
A statically-typed, object-oriented language running on the .NET runtime.
Why it's used
For .NET web backends, Windows desktop applications, and Unity game development.
Where it fits
After general programming basics; typically alongside ASP.NET or .NET.

Core concepts

  • Classes and interfaces
  • Properties
  • LINQ (query syntax over collections)
  • Async/await
  • Nullable reference types

Example

LINQ (Where here) lets you query collections declaratively, similar in spirit to JavaScript's array .filter() -- a hallmark of C#'s functional-influenced style.

var numbers = new List<int> { 1, 2, 3, 4 };
var evens = numbers.Where(n => n % 2 == 0).ToList();

Common use cases

  • ASP.NET web APIs
  • Windows desktop applications
  • Unity game development

Project ideas

  • A small console app modeling a domain with classes and LINQ queries over a collection

Official references