Hi Vijay, On Fri, 5 Apr 2002, macrodisk wrote: macrod> Thank you for your reply. The following code gives me the error in macrod> Borland compiler: macrod> macrod> boost::char_separator<char> sep(";", boost::keep_empty_tokens); macrod> macrod> [C++ Error] CVLZOut1.cpp(23): E2285 Could not find a match macrod> for 'boost::char_separator<char,char_traits<char> >::char_separator macrod> (char *,boost::empty_token_policy)' That is right, it should give an error. The above is incorrect usage. macrod> but this works fine: macrod> boost::char_separator<char> sep(";", "|", boost::keep_empty_tokens); macrod> macrod> I had expected the first version to work too, since macrod> boost::char_separator<char> sep(";"); macrod> works fine and I just want to add keep_empty_tokens to this. Sorry. The way default arguments work in C++ is not the most ideal. There is no particularly good way to handle this kind of thing. Ciao, Jeremy ---------------------------------------------------------------------- Jeremy Siek http://php.indiana.edu/~jsiek/ Ph.D. Student, Indiana Univ. B'ton email: jsiek@osl.iu.edu C++ Booster (http://www.boost.org) office phone: (812) 855-3608 ----------------------------------------------------------------------