unused.hpp

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#ifndef KAGOME_UNUSED
#define KAGOME_UNUSED

#include "common/empty.hpp"
#include "common/tagged.hpp"

namespace kagome {

  template <size_t Num>
  struct NumTag {
   private:
    static constexpr size_t tag = Num;
  };

  template <size_t N>
  using Unused = Tagged<Empty, NumTag<N>>;

  template <size_t N>
  bool operator==(const Unused<N> &, const Unused<N> &) {
    return true;
  }

}  // namespace kagome

#endif  // KAGOME_UNUSED