Hi, I'm trying out boost:phoenix. Until now I used boost::lambda. I have code written using boost::lambda that returns a boost::function. E.g. boost::function<float(float)> flog() { using namespace boost::lambda; return bind(static_cast<float(*)(float)>(std::log), _1); } And with boost::lambda I can reuse the boost::function like this boost::function<float(float)> func = -bind(flog(), _1); to build bigger blocks. But I cannot make it work with boost::phoenix. boost::function<float(float)> func = -bind(flog(), arg1); does not compile. How do I use a boost::function within phoenix? Or what do I need to return instead of a boost::function to reuse it in phoenix? Basically I want to build more complex functions out of simple ones which are returned by some function to hide the internals of the function. I'm using Boost version 1.41.0 and g++ (Debian 4.3.2-1.1) 4.3.2. Jens