10 Aug
2011
10 Aug
'11
7:40 p.m.
On 8/10/2011 11:18 AM, Joel de Guzman wrote:
That example of yours [ push_back(nil(), 1) ] can also be made to work by making 'nil' random-access. In essence, we should give all sequences the highest potential traversal category that we can.
OK, let's pick a different example: fusion::list<int> l(1); fusion::pop_back(fusion::push_back(l, 42)); Although technically this works today, it's just a curiosity due to the way joint_view iterators work. list is fwd, so according to your scheme so too would be push_back(l, 42), and so we couldn't legally call pop_back on it. -- Eric Niebler BoostPro Computing http://www.boostpro.com