Re: [Boost-users] boost::sub_range vs boost::iterator_range

From: Victor A. Wagner Jr. (vawjr_at_[hidden])
Date: 2005-12-08 14:22:04

At 14:15 2005-12-07, Thorsten Ottosen wrote:
>Victor A. Wagner Jr. wrote:
>
>  >> Seems to me that sub_range is a convenience class to describe
>iterator ranges from ranges or containers that model ForwardRange, from
>which you can propagate constness.
>  >
>  >
>  >
>  > yup, that's what I thought also
>
>
>It seems that the problem was caused by the fact that the vc71
>generates default operators a bit wierd.
>   The copy-constructor is default generated and so does simply copy the
>iterators. It seems that the default generated constructor/ assignment
>for sub_range calls a templated version of iterator_range's
>construcgtor/ assignment operator
>
>I think this might be a bug in the compiler.
>
>I've added the following overload
>
>
>          sub_range& operator=( sub_range r )
>          {
>              //
>              // argument passed by value to avoid
>              // const_iterator to iterator conversion
>              //
>              base::operator=( r );
>              return *this;
>          }
>
>and can now compile your program.
>
>I've also committed this to the main cvs.

yes, it compiles, and runs on vc7.1
it does NOT compile on vs8.0 (which is currently my default compiler)

>-Thorsten
>
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Victor A. Wagner Jr.      http://rudbek.com
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