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Thread-safe singleton pattern in C#

/ Published in: C#
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Here's an implementation of a thread safe singleton

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  1. public sealed class MySingleton
  2. 	{
  3. 		private static MySingleton instance;
  4. 		private static readonly Object sync = new object();
  5.  
  6. 		private MySingleton()
  7. 		{
  8. 			// initialize members here
  9. 		}
  10.  
  11. 		public static MySingleton Instance
  12. 		{
  13. 			get
  14. 			{
  15. 				if (instance == null)
  16. 				{
  17. 					lock (sync)
  18. 					{
  19. 						if (instance == null)
  20. 							instance = new MySingleton();
  21. 					}
  22. 				}
  23.  
  24. 				return instance;
  25. 			}
  26. 		}
  27.  
  28. 		public void SayHello()
  29. 		{
  30. 			Console.WriteLine("Hello!");
  31. 		}
  32.  
  33. 	}

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