singleton.h

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// Copyright (c) 2014-2018, The Monero Project
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namespace Language
{
  template <class T>
  class Singleton
  {
    Singleton() {}
    Singleton(Singleton &s) {}
    Singleton& operator=(const Singleton&) {}
  public:
    static T* instance()
    {
      static T* obj = new T;
      return obj;
    }
  };
}