/*
* Singleton.h
*
* Created on: 04.07.2012
* Author: Felix
*/
#ifndef DG_SINGLETON_H_
#define DG_SINGLETON_H_
#include <SFML/System.hpp>
/**
* Template class for inheriting singleton behaviour.
* This uses lazy initialization and should be thread safe in C++11 (untested).
* To use, just make a subclass with only a private default constructor and Singleton<T>
* as friend class.
* @code
* class MyClass : public Singleton<MyClass> {
* private:
* friend class Singleton<MyClass>;
* MyClass() = default;
* };
* @endcode
template <class T>
class Singleton : public sf::NonCopyable {
// Public functions.
public:
static T& i();
};
* Returns the instance of T.
T& Singleton<T>::i() {
static T s;
return s;
#endif /* DG_SINGLETON_H_ */
