Fórum PS ➡ Converting a type (class category) to bool, implicitly ♦, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

// in reply to the
// PowerShell thread, in Technet forum:
// http://bit.ly/2mQHgpU

namespace Rextester
{
    class Test{
        public const string TEST="TEST";
        public string[] Arr;
        public static implicit operator bool(Test t){
            return t.Arr==null?false:(Array.FindIndex(t.Arr,s=>s==TEST)>=0);
        }
    }
    
    public class Program
    {
        public static void Main(string[] args)
        {
            Test t=new Test();
            if(t)Console.WriteLine("True");else Console.WriteLine("False"); // False
            
            t.Arr=new[]{"Abc","ABC"};
            if(t)Console.WriteLine("True");else Console.WriteLine("False"); // False
            
            t.Arr=new[]{"Abc","ABC","Test"};
            if(t)Console.WriteLine("True");else Console.WriteLine("False"); // False
            
            // NOTICE: HERE, THE OUTPUT IS True
            t.Arr=new[]{"Abc","ABC",Test.TEST};
            if(t)Console.WriteLine("True");else Console.WriteLine("False"); // True
            
            Console.WriteLine("\n\nHello, world!");
        }
    }
}

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Compilation time: 0,16 sec, absolute running time: 0,14 sec, cpu time: 0,11 sec, average memory usage: 14 Mb, average nr of threads: 3