Re: [Boost-users] Boost.Iostreams

On Sunday 07 August 2005 13:21, Jonathan Turkanis wrote:

Steven T. Hatton wrote:

...

I just happened to open Konqueror to the root of a recent boost CVS, and discovered an HTML file with some information I've never seen before. Among that information was a link to the Boost.Iostreams library. I don't see any reference to it on the Boost homepage, and when I searched the site I didn't find much there. But I've found it elsewhere on the Internet. I'm confused as to the status of the library. Is it a continuing project? I sure hope so.

Boost.Iostreams was accepted almost a year ago (can it be that long?) but will make its first official appearance as part of Boost in the 1.33 release -- any day now.

You can view the docs here:

http://boost-consulting.com/boost/libs/iostreams

(this version of the documentation contains some mistakes which have been corrected in the release branch)

Thanks for your interest!

Jonathan

Thank you. This is good news. I do have a question/observation regarding the mapped_file classes. I see they advertise their element type as `typedef char char_type;'. I'm treating it as a container in the STL sense. In ISO/IEC 14882:2003(E) §32.1 containers are specified to have `X::value_type T' as well as a difference_type which is the same as the difference_type for the iterator type defined for the container. In the case of a mapped_file, I guess that would be what is given by applying one of these to char_type: //<iterator> template<class T> struct iterator_traits { typedef ptrdiff_t difference_type; typedef T value_type; typedef T* pointer; typedef T& reference; typedef random_access_iterator_tag iterator_category; }; template<class T> struct iterator_traits { typedef ptrdiff_t difference_type; typedef T value_type; typedef const T* pointer; typedef const T& reference; typedef random_access_iterator_tag iterator_category; }; I think you could do something like: mapped_file { typedef char* iterator; // which you have typedef iterator_traits<iterator>::difference_type difference_type; typedef iterator_traits<iterator>::value_type value_type; typedef iterator_traits<iterator>::pointer pointer; typedef iterator_traits<iterator>::reference reference; typedef const char* const_iterator; // which you also have typedef iterator_traits::const_reference const_reference; typedef std::reverse_iterator<iterator> reverse_iterator; typedef std::reverse_iterator const_reverse_iterator; //... }; I see that mapped_file has some "Container interface" items, so it's an idea that's already been partially implemented. It seems reasonable to flesh it out, unless there's some obstacle to doing so. -- Regards, Steven