patch.hpp

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#pragma once
#ifndef PATCH_HPP_
#define PATCH_HPP_

#include <iosfwd>
#include <vector>
#include <map>
#include <memory>

namespace wtl {class sfmt19937_64;}

namespace edal {

class Individual;

class Patch {
  public:
    using URBG = wtl::sfmt19937_64;

    Patch(unsigned int seed);

    Patch(Patch&&) noexcept;

    ~Patch();


    void assign(size_t n, const Individual& founder);


    void emplace_back(Individual&& ind) {members_.emplace_back(std::move(ind));}

    size_t size() const {return members_.size();}

    bool empty() const {return members_.empty();}

    std::map<Individual, size_t> summarize() const;


    std::vector<Individual> mate_and_reproduce() const;

    std::vector<std::pair<unsigned, unsigned int>>
    make_destinations(size_t n, size_t row, size_t col, size_t num_rows, size_t num_cols) const;


    void viability_selection();

  private:


    std::vector<double> effective_num_competitors() const;

    void change_sex_half(size_t n);

    // data member
    std::vector<Individual> members_;

    std::unique_ptr<URBG> engine_;
};

extern std::ostream& operator<< (std::ostream& ost, const Patch& patch);

} // namespace edal

#endif /* PATCH_HPP_ */