Example v C# string interning.

StringInterning.cs

using System;
using System.Text;

// Example of C# string interning.
// Created by Vaclav Bohac in 2011

class Test
{

	public static void Main()
	{
		string foo = "Lipsum",
		       bar = "Lipsum";

		string buz = new StringBuilder().Append("Li").Append("psum").ToString();
		
		Console.WriteLine((Object) foo == (Object) bar); // True
		Console.WriteLine((Object) foo == (Object) buz); // False
		// ... but ...
		Console.WriteLine(foo == buz); // True
	}

}