model_measurements.h

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#if !defined(ULTRA_MODEL_MEASUREMENTS_H)
#define      ULTRA_MODEL_MEASUREMENTS_H
 
#include <optional>
 
#include "kernel/fitness.h"
#include "utility/misc.h"
 
namespace ultra
{
template<Fitness F>
struct model_measurements
{
  model_measurements() = default;
  model_measurements(const F &, double);
 
  [[nodiscard]] bool empty() const noexcept;
 
  [[nodiscard]] friend bool operator==(
    const model_measurements &, const model_measurements &) noexcept = default;
 
  // --- Serialization ---
  [[nodiscard]] bool load(std::istream &);
  [[nodiscard]] bool save(std::ostream &) const;
 
  std::optional<F> fitness {};
  std::optional<double> accuracy {};
};
 
template<Fitness F>
[[nodiscard]] auto operator<=>(const model_measurements<F> &,
                               const model_measurements<F> &) noexcept;
 
#include "kernel/model_measurements.tcc"
 
}  // namespace ultra
 
#endif  // include guard