singleton.hpp

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#pragma once
 
namespace fur::util {
 
template <typename T>
class Singleton {
 public:
  static T& instance();
 
 public:
  Singleton() = default;
 
  // Don't allow copy and move constructors/assignments!
  Singleton(const Singleton&) = delete;
  Singleton& operator=(const Singleton&) = delete;
  Singleton(Singleton&&) noexcept = delete;
  Singleton& operator=(Singleton&&) noexcept = delete;
};
 
}  // namespace fur::util
 
#include <util/singleton.inl>