/*    cpplibga, free library of genetic algorithms.    Copyright (C) 2003  Burger Y.A. (aka Jo Kruger)    This program is free software; you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation; either version 2 of the License, or    (at your option) any later version.    This program is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.    You should have received a copy of the GNU General Public License    along with this program; if not, write to the Free Software    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USAContacts:   address: planet Terra   e-mail:  jo_kruger@mail.ru            kruger@selena.net.ua*/#ifndef __CPPLIBGA_SOLUTION_H__#define __CPPLIBGA_SOLUTION_H__#include <assert.h>#include <cpplibga/Types.h>namespace cpplibga{    template<typename Genotype, typename Fitness> class Solution : public Genotype    {	public:      	    Solution(Fitness* fitness) : fitness(fitness),					 isChanged(true)	    {                assert(fitness);	    }	    const Genotype& getGenotype() const {return *this;}	    double calcFitness() const	    {		if(isChanged)		{		    fitnessCache=fitness->calc(getGenotype());		    isChanged=false;		}		return fitnessCache;	    }            virtual void setGene(genotype_size_type locus, typename Genotype::gene_type value)            {                Genotype::setGene(locus,value);                isChanged=true;            }                        virtual void invertGene(genotype_size_type locus)            {                Genotype::invertGene(locus);                isChanged=true;            }            virtual void fillRand()            {                Genotype::fillRand();                isChanged=true;            }	private:            Fitness*       fitness;	    mutable double fitnessCache;	    mutable bool   isChanged;    };}#endif