Minor Cleanup of Class locale                    X3J16/94-0188
-----------------------------                     WG21/N0575

by Nathan Myers, Rogue Wave Software              27-Sep-94
   myersn@roguewave.com

The standard locale interface in the Draft includes member
function templates for the convenience of those converting
old code.  They are declared as follows.

  class locale {
    ...
    // convenience interfaces
    template <class charT> inline bool isspace(charT c);
    template <class charT> inline bool isprint(charT c);
    template <class charT> inline bool iscntrl(charT c);
    template <class charT> inline bool isupper(charT c);
    template <class charT> inline bool islower(charT c);
    template <class charT> inline bool isalpha(charT c);
    template <class charT> inline bool isdigit(charT c);
    template <class charT> inline bool ispunct(charT c);
    template <class charT> inline bool isxdigit(charT c);
    template <class charT> inline bool isalnum(charT c);
    template <class charT> inline bool isgraph(charT c);
  
    template <class charT> inline charT toupper(charT c);
    template <class charT> inline charT tolower(charT c);
  };

This proposal is to remove these declarations from the class
locale itself, and replace them with templates global to the
"std" namespace, as follows:

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

Rationale
---------
These functions, as members, clutter the locale interface.  They make 
locale harder to learn, by violating its design model.  They were 
provided for the convenience of those converting code, but the 
proposed change is more convenient for such users, at no cost
to non-users or implementors.