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Unity3DTraining
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DesignPatterns
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Singleton
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EagerSingleton.cs
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Unity3DTraining
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Singleton
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EagerSingleton.cs
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/* 饿汉式单例模式
上面的例子中,在这个类被加载时,静态变量instance会被初始化,此时类的私有构造器会被调用。
这时候,单例类的唯一实例就被创建出来了。
饿汉式其实是一种比较形象的称谓。既然饿,那么在创建对象实例的时候就比较着急,
饿了嘛,于是在装载类的时候就创建对象实例。
饿汉式是典型的空间换时间,当类装载的时候就会创建类的实例,不管你用不用,
先创建出来,然后每次调用的时候,就不需要再判断,节省了运行时间。
*/
public class EagerSingleton
{
private static EagerSingleton _instance = new EagerSingleton();
//私有构造器
private EagerSingleton(){
}
public EagerSingleton GetInstance(){
return _instance;
}
}
public class Test{
void static Main(string[] args){
EagerSingleton.GetInstance();
}
}
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