virtual protected member function
bool do_is (mask m, charT c) const;
const charT* do_is (const charT* low, const charT* high, mask* vec) const;
Classify characters [virtual]
Virtual protected member function in charge of classifying characters as described in public member function is (see ctype::is for details).
Polymorphic derived classes can redefine the behavior of this function.
See also
| ctype::is | Classify characters (public member function) |
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