Joaquín Mª López Muñoz wrote:
c.insert(std::make_pair(0,1)); c.insert(std::make_pair(1,0)); c.insert(std::make_pair(1,1)); c.swap_keys(c.begin(),++c.begin()); // would yield a duplicate element (1,1)
... it implies that a possible outcome of swap_keys() is that both elements get deleted
That`s what i would expect here. :] Now, why is this surprising? Consider the following snippet: multi_index_container<int> c; // default "set"-like c.insert(1); c.insert(2); c.modify_key(--c.end(), _1 = 1); Isn`t it "surprising" in the same way, that c.size() == 1? ;-)
On another issue, you might be interested to know that the problem you brought forward in
http://lists.boost.org/Archives/boost/2005/02/80589.php
has been solved in 1.34
Nice! Best Regards, David. ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.