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C# Brainteasers

Please try to find the output of following code without running it.

 using System;
using System.Collections.Generic;

 class Program
{
    static void Main(string[] args)
    {
        DoSomething("a", "b");
        Console.ReadLine();
    }

     public static void DoSomething<T>(IList<T> set)
    {
        Console.WriteLine(set.Count);
    }

     public static void DoSomething<T>(params T[] items)
    {
        List<T> set = new List<T>();
        foreach (T t in items)
        {
            if (t == null)
                continue;
            set.Add(t);
        }
        DoSomething(set);
    }
}

 Answer - it will go in infinite loop and you will get out of stack error. Reason behind this is that CLR thinks converting a List to T[] is easier then converting it to IList. 

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