30 Sep
2011
30 Sep
'11
3:23 p.m.
on Fri Sep 30 2011, Krzysztof Żelechowski
Dave Abrahams wrote:
make it copyable, for example. A wrapper over a plain pointer could initialize the pointer to 0. Now it's a valid past-the-end iterator into an array of length zero. Such an iterator is also comparable with other iterators into the same sequence. That's actually far from being minimally singular.
I doubt there may be a sequence of length 0 at NULL. How would you allocate such a sequence?
It already exists. char* p = 0; p == p; // defined behavior p - p; // defined behavior p + 0; // defined behavior -- Dave Abrahams BoostPro Computing http://www.boostpro.com