C++ In a Nutshell

Name

locale class — Represents a locale as a set of facets

Synopsis

class locale{
public:
  class facet;
  class id;
  typedef int category;
  static const category
    none, collate, ctype, monetary, numeric, time, messages,
    all = collate|ctype|monetary|numeric|time|messages;
  // Construct/copy/destroy
  locale(  ) throw(  );
  locale(const locale& other) throw(  );
  explicit locale(const char* std_name);
  locale(const locale& other, const char* std_name,category);
  template <typename Facet>
  locale(const locale& other, Facet* f);
  locale(const locale& other, const locale& one, category);
  ~locale(  ) throw(  );
   
  const locale& operator=(const locale& other) throw(  );
  template <typename Facet>
  locale combine(const locale& other) const;
   
  basic_string<char> name(  ) const;
  bool operator==(const locale& other) const;
  bool operator!=(const locale& other) const;
  template <typename charT, typename Traits, typename Alloc>
  bool operator(  )(const basic_string<charT,Traits,Alloc>& s1,
                    const basic_string<charT,Traits,Alloc>& s2) const;
   
  static locale global(const locale&);
  static const locale& classic(  );
};

The locale class template represents the information for a locale. This information is stored as a set of facets. Several facets are defined by the C++ standard, and user-defined facets can be added to any locale. The has_facet function template tests whether a locale supports a particular facet. The use_facet function template retrieves a facet of a locale.

References to a facet are safe until all locale objects that use ...