Singleton Pattern(单例模式)
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/*Singleton.h*/#ifndef SINGLETON_H#define SINGLETON_Hclass Singleton{public:static Singleton *Instance();protected:Singleton();private:static Singleton *instance_;};#endif
/*Singleton.cpp*/#include "Singleton.h"#include <iostream>Singleton *Singleton::instance_=0;Singleton::Singleton(){std::cout<<"Singleton..."<<std::endl;}Singleton *Singleton::Instance(){if(instance_==0){instance_=new Singleton();}return instance_;}
/*main.cpp*/#include "Singleton.h"int main(){Singleton *sgn=Singleton::Instance();return 0;}
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