Re: [Boost-bugs] [Boost C++ Libraries] #6965: Handling of sequence of non const reference

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6965: Handling of sequence of non const reference
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-06-07 05:38:54

#6965: Handling of sequence of non const reference
--------------------------------------+-------------------------------------
  Reporter:  jfalcou                  |       Owner:  djowel 
      Type:  Feature Requests         |      Status:  new    
 Milestone:  To Be Determined         |   Component:  fusion 
   Version:  Boost Development Trunk  |    Severity:  Problem
Resolution:                           |    Keywords:         
--------------------------------------+-------------------------------------

Comment (by jfalcou):

 I Just attached a test case and the error I get.
 Adding:

 {{{
   template <typename Sequence>
   static BOOST_PP_CAT(vector_data, N)
   init_from_sequence(Sequence& seq)
   {
       typedef typename result_of::begin<Sequence>::type I0;
       I0 i0 = fusion::begin(seq);
       BOOST_PP_REPEAT_FROM_TO(1, N, FUSION_ITER_DECL_VAR, _)
       return BOOST_PP_CAT(vector_data, N)(BOOST_PP_ENUM_PARAMS(N, *i));
   }

   template <typename Sequence>
   BOOST_PP_CAT(vector, N)(
       Sequence& seq
 #if (N == 1)
     , typename boost::disable_if<is_convertible<Sequence, T0> >::type*
 /*dummy*/ = 0
 #endif
       )
       : base_type(base_type::init_from_sequence(seq)) {}
 }}}

 to vector_n.hpp and re-preprocess fix the stuff. I guess other sequences
 may have similar mechanism. Not sure about any side effect tough.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6965#comment:2>
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