darmao的博客

懒汉：（非到用的时候才构造出来一个对象）class Sigleton{private: Sigleton() { this->id=0; } static Sigleton *sigleton; static pthread_mutex_t lock;public: static Sigleton* getIns...

简单工厂模式class SingleCore{public: virtual void Show()=0;};class SingleCoreA:public SingleCore{public: void show() { cout<<"coreA"<<endl; }};class SingleCor...

#include <iostream>#include <vector>#include <sstream>#include <algorithm>#include <list>using namespace std;class Observer{public: Observer(){} virtual ...