Re: [Boost.Asio] asio objects: initializing after construction

std::map<key, value> expects value to be assignable, while most of
asio objects are non-copyable. Consider using a container of [smart]
pointers.

> I want to extend the maps with new objects, so what is the right way to (?):
>
>        my_acceptors[someport_int].initialize(_my_ioservice,_my_endpoint);
>        my_acceptors[another_int].initialize(_my_ioservice);
>