Generics
Write reusable, type-safe classes and methods.
Introduction
Generics preserve concrete type information without duplicating implementation.
Box<T> can store any chosen type while preventing values of other types from being assigned accidentally.
Runnable C# example
Program.cs
using System;
class Box<T>(T value) { public T Value { get; } = value; }
class Program
{
static void Main()
{
var box = new Box<int>(42);
Console.WriteLine(box.Value);
}
}
42Practice with the debugger
Set a breakpoint on an important assignment or condition, click Debug, and inspect the local values before stepping to the next line.
Practice with a challenge
Use what this lesson covers to solve a real problem. Each challenge runs in your browser with instant tests and an AI review.
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