[boost] Re: A functional "bind"-ing exercice...

From: Hubert Holin (Hubert.Holin_at_[hidden])
Date: 2003-01-31 09:35:42

Somewhere in the E.U., le 31/01/2003

In article <00d801c2c927$8d06dd20$1d00a8c0_at_pdimov2>,
 "Peter Dimov" <pdimov_at_[hidden]> wrote:

> From: "Hubert Holin" <Hubert.Holin_at_[hidden]>
> 
> >    eater(::boost::bind(std::mem_fun_ref(&(A::operator ())), a));
> 
> eater(a) is much simpler, I think.

         Indeed!

> 
> >    eater(::boost::bind(std::mem_fun_ref(&(AN::operator ())), an, 1));
> 
> eater(bind(an, 1));

         Doesn't work (with MWCWPro 8.3, at least), giving me the error:

Error   : 'result_type' is not a member of class 'AN'
 (point of instantiation: 'main(int, char **)')
  (instantiating: 'boost::_bi::bind_t<boost::_bi::unspecified, AN, 
boost::_bi::list1<boost::_bi::value<int>>>')
   (instantiating: 'boost::_bi::result_traits<boost::_bi::unspecified, 
AN>')
bind.hpp line 59       typedef typename F::result_type type;

   Merci

HH