I just tried to build this code in visual studio 2005, and got error: error C3201: the template parameter list for class template 'boost::mpl::bind2::apply' does not match the template parameter list for template parameter 'boolfunc' This code works fine with gcc, and boost mpl portability page (http://www.boost.org/libs/mpl/doc/tutorial/portability.html) says my version of visual studio should be able to compile this. However, it appears to think the lambda< ... >::type::apply is not a metafunction. Any help will be greatly appreciated. -Matt Brown #include <iostream> #include #include #include template