19 Oct
2011
19 Oct
'11
7:34 p.m.
On Wednesday, October 19, 2011 21:21:00 Olaf van der Spek wrote:
On Wed, Oct 19, 2011 at 8:50 PM, Jeffrey Lee Hellrung, Jr.
Isn't this problem caused by iterator_traits missing size_type?
Well, the lack of size_type is rather understandable since iterators are not ranges and there's nothing to be sized with an iterator. An unsigned distance_type would be more expected though. But what's more important, std::distance in that case could be formulated the similar way for all iterator types (i.e. returns the number of increments required for begin to reach the end).
What would the problem be of just using std::size_t?
In 99% of cases I assume this would suffice. But I'd still prefer a make_unsigned-synthesized type.