Hi, I'm trying to use the lambda constructor provided in boost and it's not compiling. class someclass { someclass(sometype, int x) } std::vector v<sometype> std::vector v2<someclass> std::transform( v.begin(), v.end(), std::back_inserter( v2 ), boost::bind( boost::lambda::constructor<someclass>(), _1, 5) ); // where 5 is a constant int parameter for x to the constructor Resulting in Error 1 error C2039: 'result_type' : is not a member of 'boost::lambda::constructor<T>' boost_1_35_0\boost\bind.hpp 67 Error 2 error C2146: syntax error : missing ';' before identifier 'type' boost_1_35_0\boost\bind.hpp 67 Error 3 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int boost_1_35_0\boost\bind.hpp 67 Error 4 error C2208: 'boost::_bi::type' : no members defined using this type boost_1_35_0\boost\bind.hpp 67 Error 5 fatal error C1903: unable to recover from previous error(s); stopping compilation boost_1_35_0\boost\bind.hpp 67 What is wrong with my syntax?