[Boost-users] Re: 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&)' ==================

Well, I was able to fix the previous problem, but i'm running into another problem similar to this. I'm using the same bind call, but this time i'm getting error like this. ========================= cxtreeview.cpp:55: error: call of overloaded `bind(bool (CXTreeView::*&)(Gtk::TreeIter&), CXTreeView* const, const boost::lambda::lambda_functor >&)' is ambiguous /nfs/skglnx/home/skg/.packages/boost-1.32.0/include/boost-1_32/boost/lambda/detail/bind_functions.hpp:415: note: candidates are: const boost::lambda::lambda_functor >, typename boost::lambda::detail::bind_tuple_mapper::type> > boost::lambda::bind(const Arg1&, const Arg2&, const Arg3&) [with Arg1 = bool (CXTreeView::*)(Gtk::TreeIter&), Arg2 = CXTreeView*, Arg3 = boost::lambda::lambda_functor >] /nfs/skglnx/home/skg/.packages/gnome-2.8/include/sigc++-2.0/sigc+ +/adaptors/bind.h:2104: note: sigc::bind_functor<-0x000000001, T_functor, typename sigc::unwrap_reference::type, typename sigc::unwrap_reference::type, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil> sigc::bind(const T_functor&, T_type1, T_type2) [with T_type1 = CXTreeView*, T_type2 = boost::lambda::lambda_functor >, T_functor = bool (CXTreeView::*)(Gtk::TreeIter&)] ======================== I was not able to figure out how the const keyword is coming into picture for the second argument of bind function. Any help would be of great help. Thanks, Surya