// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002350/double-in

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        double searchVal = 7.64;

        double[] values = { 32.7865, 7.03, 7.64, 0.12, -0.12, -7.1, -7.6, -32.9012 };

​

        // C# Extension Method: Double - In

        if(searchVal.In(values))

        {

            Console.WriteLine("{0} exists in the list.", searchVal);

        }

        else

        {

            Console.WriteLine("{0} doesn't exists in the list.", searchVal);

        }

    }

}