individual.tcc

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#if !defined(ULTRA_HGA_INDIVIDUAL_H)
#  error "Don't include this file directly, include the specific .h instead"
#endif
 
#if !defined(ULTRA_HGA_INDIVIDUAL_TCC)
#define      ULTRA_HGA_INDIVIDUAL_TCC

class individual::modify_proxy
{
public:
  [[nodiscard]] const individual& self() const noexcept { return ind_; }
 
  [[nodiscard]] auto &genome() noexcept { return ind_.genome_; }

  [[nodiscard]] value_type &operator[](std::size_t i) noexcept
  {
    Expects(i < size());
    return ind_.genome_[i];
  }

  [[nodiscard]] std::size_t size() const noexcept
  {
    return self().size();
  }
 
private:
  friend class individual;

  explicit modify_proxy(individual& ind) noexcept : ind_(ind) {}
 
  individual &ind_;
};

template<class F>
  requires
    std::invocable<F &, individual::modify_proxy &>
    && std::same_as<std::invoke_result_t<F &, individual::modify_proxy&>, void>
void individual::modify(F &&f)
{
  modify_proxy m(*this);
  f(m);
 
  signature_ = hash();
  Ensures(is_valid());
}
 
#endif  // include guard