Im compiling in an environment which #includes <boost::bind.hpp>, so I can't get away from it! I'd like to use Boost.Lambda sometimes, but run into namespace clashes. This code snippet works... #include <boost/lambda/lambda.hpp> #include <boost/lambda/bind.hpp> #include <boost/range.hpp> #include <vector> #include <numeric> // and also this... #include <boost/bind.hpp> struct X { int f( ) const { return 1; } }; int sum( int a, int b ) { return a + b; } int main( ) { boost::lambda::placeholder1_type x; boost::lambda::placeholder2_type y; std::vector<X> v; std::accumulate( boost::begin( v ), boost::end( v ), 0, bind( sum, x, bind( &X::f, y ) ) ); } but as soon as I extract the innermost bind into a Boost.Function, I seem to need to fully qualify all the binds, ie int main( ) { boost::lambda::placeholder1_type x; boost::lambda::placeholder2_type y; std::vector<X> v; boost::function<int(int, int)> my_sum = bind( sum, x, y ); std::accumulate( boost::begin( v ), boost::end( v ), 0, boost::lambda::bind( my_sum, x, bind( &X::f, y ) ) ); } Is there any easy way around this? It would be nice to able to name my inner binds in a meaningful way, but all the explicit qualification gets a bit cumbersome! Thx - Rob.