classSingleton{private: Singleton(); public: Singleton(Singletonconst&) = delete; Singleton& operator=(Singletonconst&) = delete;staticstd::shared_ptr<Singleton>instance(){staticstd::shared_ptr<Singleton> s{new Singleton};returns; } }; singleton usage http://www.programlife.net/cpp-singleton-me...
//allow auto_ptr to delete, using protected ~CSingletonAutoPtr() friend class auto_ptr; public: static CSingletonAutoPtr* GetInstance(); void Test(); }; 对应的 SingletonAutoPtr.cpp 如下: #include "SingletonAutoPtr.h" #include //initial static member vars here CSingletonAutoPtr* CSingleton...
classSingleton{public:staticSingleton&getInstance();std::stringgetMessage(std::stringcode);private: Singleton() {}; Singleton(Singletonconst&) =delete;voidoperator=(Singletonconst&) =delete; }; Run Code Online (Sandbox Code Playgroud) 单例.cpp ...
class Monostate { public: int GetTheAnswer() const { return sAnswer; } private: static int sAnswer; }; // monostate.cpp int Monostate::sAnswer = 42; In this example, you can create multiple instances of the Monostate class, but all calls to the GetTheAnswer() method will return the ...
Figure 1 Singleton.cpp複製 // This program illustrates how to write a singleton class (a class that // can have only one instance) in C++. The trick is to make the default // constructor, copy constructor and assignment operator all private. A // static function GetIn...
This function uses ordered memory ordering semantics, which ensures that memory access before and after the atomic operation (in program order) may not be re-ordered.修改版SingleTon.cpp：//.cpp ⼀次修改版 class SingleTon { public:/*! \brief ⽤于获得SingleTon实例，使⽤单例模式。* \return...
这段代码可以干净地编译g++ -c Singleton.cpp: classSingleton{public:staticSingleton*Instance();protected: Singleton();private:staticSingleton* _instance; }; Singleton* Singleton::_instance =0; Singleton* Singleton::Instance() {if(_instance ==0) { _instance =newSingleton; }return_instance; } ...
friendclassauto_ptr<Singleton>; staticauto_ptr<Singleton>_instance; }; //Singleton.cpp auto_ptr<Singleton>Singleton::_instance; 3.增加模板 在我的一个工程中,有多个的Singleton类,对Singleton类,我都要实现上面这一切,这让我觉得烦死了。于是我想到了模板来完成这些重复的工作。
cpp * 修改日期:2007-4-7 19:56:09 描述: 设计模式中的单件类的简单 * ***/ #include <iostream #include "conio.h" using namespace std; classSingleton { public static Singleton*Getinstance() { if(p != NULL) {cout<< "已经过了单件类,无法二次创建!" < ; ...
//This class's real functionalities voidWrite(){printf("Hello, World!");} }; //use this singleton class ExampleSingleton::Instance().Write(); 这样写的确符合了singleton的两个要求,但是如果我们的系统中有许多个Singleton类,而对于每一个类,我们都要写那些固定的,重复的代码去支持其singleton的属性。这...