Re: [Boost-users] [mpl] inherit_linearly

17 Jan 2006

      David Greene  writes:
...
I'm trying something new using mpl's inherit_linearly but I can't
figure out how to do what I want to do.
The idea, simply:
template<typename Policies>
class Test : public inherit_linearly >::type {
public:
   void do_something(void) {
      for each Base in Policies
         Base::do_something();
      rof
   }
};
Is there a straightforward way to do this or am I thinking about this
in the wrong way?
See mpl::for_each:

  template<typename Policies>
  class Test 
    : public inherit_linearly >::type 
  {
      struct do_it
      {
          template <class B>
          void operator()(Test* self, B*) const
          {
              self->Base::do_something();
          };
      };

  public:
     void do_something(void)
     {
         mpl::for_each<
             Policies
           , boost::add_pointermpl::_ 
         >(
              boost::bind(do_it(), this, _1) 
         );
     }
  };

http://www.boost-consulting.com/mplbook covers this topic.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com

Re: [Boost-users] [mpl] inherit_linearly

David Abrahams