c++ - C++移植其他类的成员函数

假设我有两个不同的类，如下所示

class Nonlinear
{
   public:
   double NonlinearFunc(ParameterList) //it is a nonlinear function
};

class Solver
{
   public:
   double FuncEvaluation(ParameterList) //evaluate a function
};

double Solver::FuncEvaluation(ParameterList)
{
    ????? //evaluate function from other class
}

main()
{
    Nonlinear nl;
    Solver solve;
    double a;
    double b;
    a = nl.NonlinearFunc(ParameterList);
    b = solve.FuncEvaluation(ParameterList);

    //what I want is a=b
}

如何使用成员函数指针，以便Solver::FunEvaluation评估Nonlinear::NonlinearFunc？

最佳答案

听起来您想让Solver::FuncEvaluation()执行Nonlinear::NonlinearFunc()，对吗？如果是这样，我会这样做:

class Evaluatable
{
public:
   virtual double Evaluate(ParameterList) = 0;
};


class Nonlinear : public Evaluatable
{
public:
   double Evaluate(ParameterList);
};

class Solver
{
public:
   double FuncEvaluation(Evaluatable &expression, ParameterList);
};

double Solver::FuncEvaluation(Evaluatable &expression, ParameterList params)
{
    return expression.Evaluate(params);
}

main()
{
    Nonlinear nl;
    Solver solve;
    double a;
    a = solve.FuncEvaluation(nl, ParameterList);
}

关于c++ - C++移植其他类的成员函数，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/25901545/