GENERIC INTEFACE

using System;
using System.Collections.Generic;

// Generic interface
interface IRepository<T>
{
    void Add(T item);
    void Remove(T item);
    IEnumerable<T> GetAll();
}

// Class implementing the generic interface for a specific type
class Repository<T> : IRepository<T>
{
    private List<T> _items = new List<T>();

    public void Add(T item)
    {
        _items.Add(item);
    }

    public void Remove(T item)
    {
        _items.Remove(item);
    }

    public IEnumerable<T> GetAll()
    {
        return _items;
    }
}

class Program
{
    static void Main()
    {
        // Using the generic interface with int
        IRepository<int> intRepository = new Repository<int>();
        intRepository.Add(1);
        intRepository.Add(2);
        foreach (var item in intRepository.GetAll())
        {
            Console.WriteLine($"Integer: {item}");
        }

        // Using the generic interface with string
        IRepository<string> stringRepository = new Repository<string>();
        stringRepository.Add("Hello");
        stringRepository.Add("World");
        foreach (var item in stringRepository.GetAll())
        {
            Console.WriteLine($"String: {item}");
        }
    }
}