// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002690/object-fromcache

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

       var cache1 = new CacheTest();

       var cache2 = new CacheTest();

​

       //C# Extension Method: Object - FromCache

       int cache1_1 = cache1.FromCache(i => cache1.Increment());

       int cache1_2 = cache1.FromCache(i => cache1.Increment());

​

       int cache2_1 = cache1.FromCache("CustomKey", i => cache2.Increment());

       int cache2_2 = cache1.FromCache("CustomKey", i => cache2.Increment());

​

       int cache3_1 = cache1.FromCache("CustomKeyWithValue", 1);

       int cache3_2 = cache1.FromCache("CustomKeyWithValue", 2);

        Console.WriteLine(cache1_1);

        Console.WriteLine(cache1_2);

​

        Console.WriteLine(cache2_1);

        Console.WriteLine(cache2_2);

​

        Console.WriteLine(cache3_1);

        Console.WriteLine(cache3_2);

    }

    public class CacheTest

    {

        public int Cache = 0;

​

        public int Increment()

        {

            Cache++;

            return Cache;

        }

    }

}