C# template method and type constraint

在 linqpad 裡試著，記得先選為 c# program，再貼 code

void Main()
{
    /*
    // show error
    run(20);
    run("Hello world");
    */
    run(new Dictionary<string, string>());
}

// Define other methods and classes here
// Add type constraint for run()
// allow only IDictionary
void run<T>(T x) where T: IDictionary {
  Console.WriteLine(typeof(T).ToString());
}