/**
 * singleton.h
 * Implemented by Blueprint Technologies, Inc.
 */

#ifndef _singleton_h
#define _singleton_h

/**
 * Defines an Instance operation that lets clients access its
 * unique instance. Instance is a class operation (that is, 
 * a class method in Smalltalk and a static member function
 * in C++).
 */

class Singleton
{

private:
	static Singleton* singleton;

public:
	static Singleton* instance()
	{
		if( singleton == 0 )
		{
			singleton = new Singleton();
		}
		return singleton;
	};
};

Singleton* Singleton::singleton = 0;

#endif