[Boost-users] [string_algo] case insensitive compare

Hello *, I have a question regarding string comparisons. Are the comparisons below suppose to work in VC 7.1 boost 1.34.0? Case 1: bool is_test_string(std::string const& str) { std::string const& compare_with=std::string("test_string"); boost::algorithm::is_iequal comparator; return comparator(str, compare_with); } Case 2: bool is_test_string(std::string const& str) { char const* compare_with = "test_string"; boost::algorithm::is_iequal comparator; return comparator(str, compare_with); } Case 3: bool is_test_string(std::string const& str) { boost::algorithm::is_iequal comparator; return comparator(str, "test_string"); } In all 3 cases I receive compiler erros. Many thanks, Ovanes