-String to_str (char c, int n = 1);
-String to_str (int i, char const* format = 0);
-String to_str (double f , char const* format = 0);
-String to_str (long b);
-String to_str (bool b);
-String to_str (char const* format, ... );
+String to_string (char c, int n = 1);
+String to_string (int i, char const* format = 0);
+String to_string (double f, char const* format = 0);
+String to_string (long b);
+String to_string (bool b);
+String to_string (char const* format, ... );