c++ 类模版、成员函数模版、函数模版 用法

template <class T>

void SwapFunction(T &first, T &second){

}//函数模版

template <class T>//类模版

class CTemplate{

public:

    void SWap(T &first, T &second){

    }

};

#include <iostream>
class Single{
public:
    static Single*  ShareInstance();
    static void ReleaseInstance();
     template<class Tex>//要成员函数实现模版用法，而类不是模版类。需要写成这个格式
    void SwapEx(Tex &obj1, Tex &obj2){
    }
private:
    Single();
    ~Single();
    Single(const Single &other);
    Single& operator=(const Single &other);
    
private:
    static Single *m_pObj;
};

Single* Single::m_pObj = NULL;

Single* Single::ShareInstance(){
    if (NULL == m_pObj) {
        Single obj;
        m_pObj = new Single();
    }
    return m_pObj;
}

void Single::ReleaseInstance(){
    if (m_pObj) {
        delete m_pObj;
        m_pObj = NULL;
    }
}

Single::Single(){
    
}
Single::~Single(){
    
}