Method TraverseTree

comp/interpolate.cpp:353–357

    }

    void TraverseTree (const function<void(CoefficientFunction&)> & func_) override
    {
      func->TraverseTree(func_);
      func_(*this);
    }

    shared_ptr<CoefficientFunction> Diff (const CoefficientFunction * var, shared_ptr<CoefficientFunction> dir) const override
    {