optional.hh

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#pragma once
 
#include <optional>
 
namespace HEJ {
  // Templates cannot be deprecated, so we need this workaround
  namespace detail {
    [[deprecated("`HEJ::optional` is deprecated. Use `std::optional` instead.")]]
    inline constexpr int HEJ_optional = 0;
    inline constexpr int use_std_optional_instead = HEJ_optional;
  }
 
  template<typename T>
  using optional = std::optional<T>;
}