Using C# 2.0 Generics to achieve a reusable Singleton pattern

一般代码：

public sealed class Singleton
{
Singleton()
{
}

public static Singleton Instance
{
get
{
return SingletonCreator.instance;
}
}

class SingletonCreator
{
// Explicit static constructor to tell C# compiler
// not to mark type as beforefieldinit
static Nested()
{
}

internal static readonly Singleton instance = new Singleton();
}
}用模板实现：
public class SingletonProvider <T> where T:new()
{
SingletonProvider() {}

public static T Instance
{
get { return SingletonCreator.instance; }
}

class SingletonCreator
{
static SingletonCreator() { }

internal static readonly T instance = new T();
}
}用例：
public class TestClass
{
private string _createdTimestamp;

public TestClass ()
{
_createdTimestamp = DateTime.Now.ToString();
}

public void Write()
{
Debug.WriteLine(_createdTimestamp);
}
}使用：
SingletonProvider<TestClass>.Instance.Write();
原地址：