on Wed Sep 28 2011, Nathan Ridge
2. The concept mechanism used by Boost should not require singular iterators to exist; the standard is obnoxious and misguided here and promotes sloppy coding.
I think the Boost authors are unlikely to decide to ignore a part of the standard just because one person believes it is obnoxious and misguided and promotes sloppy coding.
I would suggest making your case about the default constructibility of forward iterators at comp.std.c++. If you gain consensus there that this requirement is indeed misguided, then your request will carry more weight here.
I'd also like to point out that there's no rule saying default-constructed iterators must be singular. -- Dave Abrahams BoostPro Computing http://www.boostpro.com