[locale.ctype.byname]

# 28 Text processing library [[text]](./#text)

## 28.3 Localization library [[localization]](localization#locale.ctype.byname)

### 28.3.4 Standard locale categories [[locale.categories]](locale.categories#locale.ctype.byname)

#### 28.3.4.2 The ctype category [[category.ctype]](category.ctype#locale.ctype.byname)

#### 28.3.4.2.3 Class template ctype_byname [locale.ctype.byname]

[ð](#lib: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(); };}
