In the following code, class template HANDLER is supposed to accept one template parameter F and one template template parameter P<R, S>. The base class IMPLEMENTATION is dependent to the parameters R and S. The way I declare class template HANDLER, I must pass the template arguments F,P, R and S individually in ‘HANDLER’ template list (see class BAR constructor). Isn’t there a way to pass class template ‘P<R, S>’ as a single parameter in the ‘HANDLER’ template list (see comment below class ‘BAR’ constructor) and still treat ‘R’ and ‘S’ as template arguments in the ‘HANDLER’ class? Thank you in advance, I am still new to C++ templates.

template <typename R, typename S> class IMPLEMENTATION{
  public:
};

template <typename F, template <typename, typename> class P, typename R, typename S> class HANDLER : public IMPLEMENTATION<R, S>{
    
  private:
  F object;
  
  public:   
  HANDLER(const F& object) : object(object){} 

};


template <typename R, typename S> class BAR{

 private:
 IMPLEMENTATION<R, S>* implementation;
 
 public:
 template <typename F> BAR(const F& object):implementation(new HANDLER<F, BAR ,R, S>(object)){}
 /*template <typename F> BAR(const F& object):implementation(new HANDLER<F, BAR<R,S>>(object)){}*/

};