Re: Interest in updated, standalone iterator_facade library?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2019-08-11 15:52:12

Zach Laine wrote:
> On Sun, Aug 11, 2019 at 5:43 AM Peter Dimov via Boost 
> <boost_at_[hidden]> wrote:
>
> > Zach Laine wrote:
> >
> > > https://tzlaine.github.io/iterator_facade
> >
> > `reference` being `char const` in the introductory example doesn't feel 
> > correct. `char const` can't be returned from a function (such as 
> > `operator*`), top-level qualifiers aren't meaningful for `char`.
>
> It is correct, as of C++20.  Proxy iterators are first-class citizens, as 
> of the ranges concepts work.  I used that reference type on purpose, and I 
> refer to that later in the docs.  Also, this is copy-paste from Boost.Text 
> (proposed), which uses that exact iterator with a "char const" reference 
> type.

Thanks. You should however be aware that both gcc and clang warn on 
functions returning `const char` with -Wextra. :-)