virtual protected member function
const charT* do_scan_is (mask m, const charT* low, const charT* high) const;

Return first character in category [virtual]

Virtual protected member function in charge of returning the first character in [low,high) that matches category m, as described in public member function scan_is (see ctype::scan_is for details).

Polymorphic derived classes can redefine the behavior of this function.

See also