Method TraverseTree

fem/coefficient.cpp:2087–2092

  }
  
  virtual void TraverseTree (const function<void(CoefficientFunction&)> & func) override
  {
    c1->TraverseTree (func);
    c2->TraverseTree (func);
    func(*this);
  }

  void DoArchive(Archive& ar) override
  {