Re: [Boost-users] [tuple] generating tuples from type lists

From: imre_at_[hidden]
Date: 2006-08-16 08:15:20

From: David Abrahams <dave_at_[hidden]>
> Is it possible to do this trick during compilation time?
> I was able to go from type lists to boost::cons but I can't find a way 
> to make that last step.

Not sure what you mean by "that last step..."

  namespace mpl = boost::mpl;
  using namespace mpl::placeholders;

  typedef mpl::vector<int, long, char const*> types;
  typedef mpl::fold<types, boost::cons<_2,_1> >::type tuple_type;
  tuple_type some_tuple;

When I try to compile this, I receive the following error:

boost/mpl/aux_/preprocessed/plain/apply_wrap.hpp(48) : error C2039: 'apply'
: is not a member of 'boost::mpl::na'

What does this means?

Thx

ImRe