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common Singleton Pattern implementation using Generic

, 5 Oct 2011 CPOL 4.5K 1
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All classes are naturally Lazy loaded.So a better implementation will be:public class Singletonwhere T: new(){ public static readonly T Instance = new T();}You will notice that before calling the singleton class, the object will not be loaded.Surely there are...
All classes are naturally Lazy loaded.
So a better implementation will be:

public class Singleton<T>
where T: new()
  public static readonly T Instance = new T();

You will notice that before calling the singleton class, the object will not be loaded.
Surely there are differences (as you may want to get the type without instantiating its inner items), but for a general purpose, it works.


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About the Author

Paulo Zemek
Engineer Microsoft Corporation
United States United States
I started to program computers when I was 11 years old, as a hobbist, programming in AMOS Basic and Blitz Basic for Amiga.
At 12 I had my first try with assembler, but it was too difficult at the time. Then, in the same year, I learned C and, after learning C, I was finally able to learn assembler (for Motorola 680x0).
Not sure, but probably between 12 and 13, I started to learn C++. I always programmed "in an object oriented way", but using function pointers instead of virtual methods.

At 15 I started to learn Pascal at school and to use Delphi. At 16 I started my first internship (using Delphi). At 18 I started to work professionally using C++ and since then I've developed my programming skills as a professional developer in C++ and C#, generally creating libraries that help other developers do they work easier, faster and with less errors.

Now I just started working as a Senior Software Engineer at Microsoft.

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Codeproject MVP 2012, 2015
Microsoft MVP 2013-2014

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Comments and Discussions

GeneralClass static members are all loaded when the class is first ... Pin
Paulo Zemek18-Oct-11 1:49
mvpPaulo Zemek18-Oct-11 1:49 
Generalok so what's the Lazy in .Net 4 for? Pin
omid rezaei hanjani18-Oct-11 0:03
memberomid rezaei hanjani18-Oct-11 0:03 

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