types.hpp

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#pragma once
#include <vector>
#include <functional>
#include <limits>
#include <iostream>
 
namespace mc{
namespace optim{
 
    using Real = double;
 
    using Coordinates = std::vector<Real>;
 
    using ObjectiveFunction = std::function<Real(const Coordinates&)>;
 
    enum class OptimizationMode {
        MINIMIZE,
        MAXIMIZE
    };
 
    struct Solution {
        Coordinates params;
        Real value;
 
        static Solution make_worst(OptimizationMode mode) {
            if (mode == OptimizationMode::MINIMIZE) {
                return { {}, std::numeric_limits<Real>::infinity() };
            } else {
                return { {}, -std::numeric_limits<Real>::infinity() };
            }
        }
 
        bool isBetterThan(const Solution& other, OptimizationMode mode) const {
            if (mode == OptimizationMode::MINIMIZE) return value < other.value;
            return value > other.value;
        }
    };
} //namespace mc
} //namespace optim