17 Dec
2011
17 Dec
'11
5:16 a.m.
I'm wondering how placement insertion works for pair-associative Boost.Container types.
For example, given:
//[ex_code struct D { D(char,char) {} // Insert Boost.Move awareness here... }; boost::container::map<int,D> my_map; //]
Will my_map.emplace(0, 't', 'p') call D('t', 'p') and move the object into the map?
Will Boost.Unordered work the same way?
I've answered these questions but ran into another. Boost.Unordered `emplace()` calls return `std::pair<iterator,bool>` rather than `iterator`. Furthermore, MSVC 2010's TR1.Unordered `emplace()` implementation accepts only one argument: `std::pair<int,D>` in this case. Is this expected? Cromwell D. Enage