[Boost-users] Another boost bind question

Hi, Please find the attached file. Whats wrong with bind, I'm getting compilation errors . =================== temp_bind.cpp: In constructor `temp::temp()': temp_bind.cpp:30: error: no matching function for call to `if_then(const boost::lambda::lambda_functor >, boost::tuples::tuple >, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> > >, std::basic_ostream&)' ================== Surya Kiran Gullapalli Sr. Development Engineer Fluent India Pvt. Ltd., Pune