Question

I want to boost::assign a list to an empty value.
Something like:

using namespace boost::assign;
std::list<int> myList = list_of<int>();

The reason that I want to do that is that I have a map of lists that I want to initialise and one of the lists in the map is empty.
So I actually want to:

std::map<int, std::list<int> > myMap = 
    (map_list_of(0, list_of<int>())
                (1, list_of<int>(1)(2))
                (3, list_of<int>(99));

Answer 1

Use std::list<int>() instead of list_of<int>():

std::map<int, std::list<int> > myMap = 
    (map_list_of(0, std::list<int>())
                (1, list_of<int>(1)(2))
                (3, list_of<int>(99));