std::time_put(3)

NAME
std::time_put - std::time_put

Synopsis
   Defined in header <locale>
   template<
       class CharT,
       class OutputIt = std::ostreambuf_iterator<CharT>
   > class time_put;
   Class template std::time_put encapsulates date and time formatting rules. The I/O
   manipulator std::put_time uses the std::time_put facet of the I/O stream's locale to
   generate text representation of an std::tm object.
   std-time put-inheritance.svg
                        Inheritance diagram
   If a std::time_put specialization is not guaranteed to be provided by the standard
   library (see below), the behaviors of its put() and do_put() are not guaranteed as
   specified.

Specializations
   The standard library is guaranteed to provide the following specializations (they
   are required to be implemented by any locale object):
   Defined in header <locale>
   std::time_put<char> creates narrow string representations of date and time
   std::time_put<wchar_t> creates wide string representations of date and time
   In addition, the standard library is also guaranteed to provide every specialization
   that satisfies the following type requirements:
     * CharT is one of char and wchar_t, and
     * OutputIt must meet the requirements of LegacyOutputIterator.

Member types
   Member type Definition
   char_type CharT
   iter_type OutputIt

Member functions
   constructor constructs a new time_put facet
                 (public member function)
   destructor destructs a time_put facet
                 (protected member function)
   put invokes do_put
                 (public member function)

Member objects
   static std::locale::id id id of the locale
                        (public member object)

Protected member functions
   do_put formats date/time and writes to output stream
   [virtual] (virtual protected member function)

Example
// Run this code
 #include <codecvt>
 #include <ctime>
 #include <iomanip>
 #include <iostream>
 int main()
 {
     std::time_t t = std::time(nullptr);
     std::wbuffer_convert<std::codecvt_utf8<wchar_t>> conv(std::cout.rdbuf());
     std::wostream out(&conv);
     out.imbue(std::locale("ja_JP.utf8"));
     // this I/O manipulator std::put_time uses std::time_put<wchar_t>
     out << std::put_time(std::localtime(&t), L"%A %c") << '\n';
 }

Output:
 水曜日 2011年11月09日 12時32分05秒

See also
   time_put_byname represents the system-supplied std::time_put for the named locale
                   (class template)
                   parses time/date values from an input character sequence into
   time_get std::tm
                   (class template)
   put_time formats and outputs a date/time value according to the specified
   (C++11) format
                   (function template)