<locale>

Library:  Localization

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The header <locale> represents the Localization library of the C++ Standard Library. It defines the class locale, and a set of class and function templates for localization of software.

namespace std {
  class locale;
  template <class Facet> const 
           Facet& use_facet(const locale&);
  template <class Facet> bool 
           has_facet(const locale&) throw();

  template <class charT> bool isspace(charT, const locale&);
  template <class charT> bool isprint(charT, const locale&);
  template <class charT> bool iscntrl(charT, const locale&);
  template <class charT> bool isupper(charT, const locale&);
  template <class charT> bool islower(charT, const locale&);
  template <class charT> bool isalpha(charT, const locale&);
  template <class charT> bool isdigit(charT, const locale&);
  template <class charT> bool ispunct(charT, const locale&);
  template <class charT> bool isxdigit(charT, const locale&);
  template <class charT> bool isalnum(charT, const locale&);
  template <class charT> bool isgraph(charT, const locale&);
  template <class charT> charT toupper(charT, const locale&);
  template <class charT> charT tolower(charT, const locale&);

  class ctype_base;
  template <class charT> class ctype;
  template <> class ctype<char>;
  template <class charT> class ctype_byname;
  template <> class ctype_byname<char>;
  class codecvt_base;
  template <class internT, class externT, class stateT>
  class codecvt;
  template <class internT, class externT, class stateT>
  class codecvt_byname;

  template <class charT, class InputIterator>  class num_get;
  template <class charT, class OutputIterator> class num_put;
  template <class charT> class numpunct;
  template <class charT> class numpunct_byname;

  template <class charT> class collate;
  template <class charT> class collate_byname;

  class time_base;
  template <class charT, class InputIterator>  
  class time_get;
  template <class charT, class InputIterator>  
  class time_get_byname;
  template <class charT, class OutputIterator> class time_put;
  template <class charT, class OutputIterator> 
  class time_put_byname;

  class money_base;
  template <class charT, class InputIterator>
       class money_get;
  template <class charT, class OutputIterator>
       class money_put;
  template <class charT, bool Intl> class moneypunct;
  template <class charT, bool Intl> class moneypunct_byname;

  class messages_base;
  template <class charT> class messages;
  template <class charT> class messages_byname;
}

locale, has_facet(), use_facet(), isspace(), isprint(), iscntrl(), isupper(), islower(), isalpha(), isdigit(), ispunct(), isxdigit(), isalnum(), isgraph(), toupper(), tolower(), Facets, ctype, ctype_byname, num_get, num_put, numpunct, numpunct_byname, collate, collate_byname, time_get, time_get_byname, time_put, time_put_byname, money_get, money_put, moneypunct, moneypunct_byname, messages, messages_byname

ISO/IEC 14882:1998 -- International Standard for Information Systems --Programming Language C++, Section 22.1