Re: [boost] [iterators] Missing typedefs in v1.57

Class iterator_facade has been refactored in v1.57 such that most of its functionality is now in iterator_facade_base. This includes the typedefs for difference_type and reference. Hence, my classes which are derived from iterator_facade now have to declare them. For example: template class char_iter : public boost::iterators::iterator_facade< char_iter, Value, boost::iterators::random_access_traversal_tag, Value, Size > { public: typedef typename iterator_facade_::difference_type difference_type; typedef typename iterator_facade_::reference reference; ... }; Have I misunderstood how to do this? "Andrey Semashev" wrote in message news:1528031.YEdZPUoJ70@lastique-pc... On Tuesday 09 December 2014 10:43:11 news.gmane.org wrote:

I posted this a week ago in the user mailing list but it went unnoticed. Perhaps this developers' list is a better place to post it.

The typedefs for difference_type and reference used to be in scope for classes derived from iterator_facade. Since v1.57 they have to be declared thus:

typedef typename iterator_facade_::difference_type difference_type; typedef typename iterator_facade_::reference reference;

This seems out of place for a class that was designed to reduce boiler plate code. However, if the change was intentional, please document it.

I'm not sure what you mean. The typedefs are in the base class of iterator_facade and are public. As such they are accessible to the derived classes. Can you elaborate what the problem is? _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost