30 Localization library [localization]

30.4 Standard locale categories [locale.categories]

30.4.2 The ctype category [category.ctype]

30.4.2.3 Class template ctype_­byname [locale.ctype.byname]

namespace std { template<class charT> class ctype_byname : public ctype<charT> { public: using mask = typename ctype<charT>::mask; explicit ctype_byname(const char*, size_t refs = 0); explicit ctype_byname(const string&, size_t refs = 0); protected: ~ctype_byname(); }; }