I believe Zach Laine's library is the heir apparent -- it was accepted, but isn't in boost just yet.  He describes some of the issues here:

https://tzlaine.github.io/stl_interfaces/doc/html/boost_stlinterfaces/this_library_s_relationship_to_boost_iterator.html

Jeff

On Sat, Mar 14, 2020 at 2:00 PM Mateusz Loskot via Boost-users <boost-users@lists.boost.org> wrote:
Hi,

This is a bit theoretical question, but I'd like to collect some opinions.

Considering sequence of C++ versions, around where, if at all,
boost::iterator_facade shines less and becomes less relevant?

In other words:
- If you had to implement iterators in C++11, would you use it?
- If you had to implement iterators in C++17, would you use it?

Has anyone observed performance issues when using iterator_facade?

Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
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