Generic In-Memory Repository
Store any entity type through a reusable generic class.
Introduction
Generics eliminate casts while sharing one implementation across entity types.
The repository's List<T> can only contain the type selected when the repository is constructed.
Runnable C# example
Program.cs
using System;
using System.Collections.Generic;
class Repository<T>
{
private readonly List<T> _items = new();
public void Add(T item) => _items.Add(item);
public IReadOnlyList<T> All => _items;
}
class Program
{
static void Main() { var repo = new Repository<string>(); repo.Add("C#"); Console.WriteLine(repo.All[0]); }
}
C#Practice 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
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