Why should you care?

Teams use in ASP.NET Core, APIs, and backend services.

See it live — copy this example

Run snippets in a .NET console app, LINQPad, or https://dotnetfiddle.net. Write Big O above every solution.

// 
using System;

Console.WriteLine(" example");

What happened?

• The example shows in action.
• Read each line, then edit one part and run again.

Practice next

1. Create a console or Web API project: dotnet new console -n Demo
2. Paste the example into Program.cs.
3. Run dotnet run and change one line.
4. Change one value in the example and run it again.
5. Break the code on purpose and read the error message.

Remember

You saw how works. Practice by editing the example. Use Next when you can explain it in your own words.