collate_byname

template<class E>
    class collate_byname : public collate<E> {
public:
    explicit collate_byname(const char *s, size_t refs = 0);
protected:
    ~collate_byname();
    };

The template class describes an object that can serve as a locale facet of type collate<E>. Its behavior is determined by the named locale s. The constructor initializes its base object with collate<E>(refs).