Dear all, I'm trying to use boost::bind in combination with boost/functional/factory.hpp (and value_factory) this works fine, boost::bind( boost::factory(), arg1, _1 ) with arg1 not being an lvalue (e.g., 2.0). however, with nested binds it is not accepted, boost::bind( boost::factory(), boost::bind( f, _1 ), _2 ) the compiler complains that it needs an lvalue for the nested bind. Is this desired behaviour? Is there some trick around this? Many thanks, Kind regards, Rutger ter Borg