Re: singleton template class

From:
"cch@srdgame" <srdgame@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Sun, 31 Aug 2008 01:22:23 +0000 (UTC)
Message-ID:
<g9crof$di8$1@news.cn99.com>
??? Thu, 28 Aug 2008 10:12:24 -0700???puzzlecracker?????????

Will this function is singleton or do I need to declare a ctor in the
derived class as public, as well as copy-ctor and assignment operator.

template<typename T>
class CSingleton
 {
  public:
         static T& Instance()
        {
             static T me;
             return me;
        }
 };

    class MyClass: public CSingleton<MyClass> {
       public:
             MyClass(){};
           ~MyClass(){};
            void Print() { printf("testing %d\n",val); } int val;
    };


Following code is one reference for you:
/
**============================================================================

 * Copyright (C) 2006 Team RioWow

 *

 * File: singleton.h

 * Description:

        This file is to define and surpport different complier and system.

 * Author: Rio Chang

 * Update: 10/28/2006

=============================================================================*/

#ifndef SINGLETON_H

#define SINGLETON_H

template <class T>

class Singleton

{

public:

    static T* getInstance()

    {

        return &(getSingleton());

    }

    static T& getSingleton()

    {

        static T instance;

        return instance;

    }

    ~Singleton(){};

protected:

    Singleton(const Singleton& sig);

    Singleton& operator = (const Singleton& sig);

    Singleton(){};

}

;

#endif

//------------------------------------------------------------------------------

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