Dear all, I've got a ternary function (which is std::find), and want to bind the first and second parameters (to the begining and the end of a std::vector). Then send the result to compose2 to check the equality for the end of the vector. Here is what I did: copy_if(istream_iterator<Terminal>(cin), istream_iterator<Terminal>(), back_inserter(temp), compose2(equal<set<Terminal>::iterator>(), bind1st(bind1st_3(ptr_fun(f), V_.begin()), V_.end()), V_.end()))); (I've prepared any goodie needed by ternary functions for the above statement: ptr_fun, bind1st_3, ...) Dev-C++ 4.9.8.0 (GCC 3.3.2 I think), gives me several errors (including "Reference to Reference" problem), and I'm nearly convinced not to continue it this way. Now, how do you, boost guys, do that? TIA, --Hossein __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/