#pragma once

namespace std {

  template <class t>
  struct remove_reference {
    typedef t type;
  };

  template <class t>
  struct remove_reference<t &> {
    typedef t type;
  };

  template <class t>
  struct remove_reference<t &&> {
    typedef t type;
  };

  template <class t>
  using remove_reference_t = typename remove_reference<t>::type;

}