[boost] more lambda woes

Lambda docs say: "When an actual argument is supplied for a placeholder, the parameter passing mode is always by reference" Yet when I changed the following code from using boost::bind to boost::lambda, I got complaints that Field is an abstract class and can't be copied. void (self_t::* insert_)(Field const&) = &self_t::insert; std::for_each(fields.begin(), fiends.end(), bind(insert_, this, _1)); What gives? -- Dave Abrahams Boost Consulting www.boost-consulting.com