如何访问 Singleton 类的静态方法?
我对单例类有些困惑,以下是我的一些观点:
I have some confusion with singleton class, below are my some points:
- 单例类可以有静态方法吗?如果是,那么我们如何调用这些方法?
- 静态类和单例类之间的主要区别是什么?
我已经按如下方式创建了我的单例类:
I have created my singleton class as follows:
public class Singleton
{
private static Singleton _instance = null;
private static object chekLock = new object();
private Singleton()
{}
public static Singleton Instance
{
get
{
lock (chekLock)
{
if (_instance == null)
_instance = new Singleton();
return _instance;
}
}
}
public static void StaticAddMethod()
{
Console.WriteLine("Add Method");
}
public void AddMethod()
{
Console.WriteLine("Add Method");
}
}
在上面的类结构中,我创建了两个方法,一个是静态的,第二个是非静态的,当我尝试访问静态方法时,它给了我编译时错误.
In Above class structure I have created two method one is Static and second is non static, When I am trying to access Static Method it gives me compile time error.
如何使用单例类的静态方法?
How can I use static method of singleton class?
您打算如何访问它?要访问静态方法,请使用类型名称:
How are you trying to access it? To access a static method you use the type name:
Singleton.StaticAddMethod();
对比
Singleton.Instance.AddMethod();
另请注意,有一些更简单的方法可以实现单例,但可以通过更少的锁定等实现相同的效果.
Note also that there are simpler ways of implementing singletons that acheive the same effect with less locking etc.
重单例和静态的区别;单例可能会实现一个接口,允许您将其传递到现有代码中.您也可以(正如您正在做的那样)推迟单例的构建(但仍然允许访问不涉及单例实例的静态方法).但是是的:静态和单例之间有很多交叉.
Re the difference between singleton and static; a singleton might implement an interface, allowing you to pass it into existing code. You can also (as indeed you are doing) defer construction of a singleton (yet still allow access to the static methods that don't involve the singleton instance). But yes: there is a lot of crossover between static and singleton.