singleton.h

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// Copyrights(c) 2017-2020, The Electroneum Project
// Copyrights(c) 2014-2019, The Monero Project
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namespace Language
{
  template <class T>
  class Singleton
  {
    Singleton() {}
    Singleton(Singleton &s) = delete;
    Singleton& operator=(const Singleton&) = delete;
  public:
    static T* instance()
    {
      static T* obj = new T;
      return obj;
    }
  };
}