Re: [Boost-users] Code stopped compile after migrating 1.42->1.45

typedef std::map MyMap;

std::ostream& operator << (std::ostream& outs, const MyMap& a) {        std::for_each(a.begin(), a.end(),                outs << boost::lambda::bind(&MyMap::value_type::second, boost::lambda::_1) << "\n");        return outs; }

FWIW, if you remove constness from "const MyMap& a" it will compile.