poc.h

#pragma once

namespace poc {

  template <typename T>
    struct IPoc
    {
      virtual ~IPoc() {}
      virtual const bool operator() () = 0;
      virtual void abstract_method() const = 0;
    };

  template <typename T>
    class Poc : public IPoc<T>
    {
    public:
      virtual const bool operator() () {
        return ( _do_subtask1() && _do_subtask2() );
      }

    protected:
      virtual const bool _do_subtask1() { return false; }
      virtual const bool _do_subtask2() = 0;
    };
  
}