In this code sequence:

boost::accumulators::accumulator_set<
long,
boost::accumulators::features<
boost::accumulators::tag::sum > > my_acc;

long f( )
{
using namespace boost::accumulators;
return sum( my_acc );
}

why do I need a using declaration? Shouldn't sum() be found
via ADL?

Using Boost 1.39 & MSVC 8.

Thanks

- Rob.