text: // Copyright (c) 2020, Ryo Currency Project
  // Portions copyright (c) 2014-2018, The Monero Project
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  /*!
   * \file singleton.h
   * 
   * \brief A singleton helper class based on template.
   */
  
  /*!
   * \namespace Language
   * \brief Mnemonic language related namespace.
   */
  namespace Language
  {
  /*!
     * \class Singleton
     * 
     * \brief Single helper class.
     * 
     * Do Language::Singleton<YourClass>::instance() to create a singleton instance
     * of `YourClass`.
     */
  template <class T>
  class Singleton
  {
  	Singleton() {}
  	Singleton(Singleton &s) {}
  	Singleton &operator=(const Singleton &) {}
    public:
  	static T *instance()
  	{
  		static T *obj = new T;
  		return obj;
  	}
  };
  }
  