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std::time_put

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.

Inheritance diagram.

Type requirements

-OutputIt must meet the requirements of LegacyOutputIterator.

Specializations

Two standalone (locale-independent) full specializations and two partial specializations are provided by the standard library:

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
`std::time_put<char, OutputIt>`	creates narrow string representations of date and time using custom output iterator
`std::time_put<wchar_t, OutputIt>`	creates wide string representations of date and time using custom output iterator

In addition, every locale object constructed in a C++ program implements its own (locale-specific) versions of these specializations.

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

[virtual]

formats date/time and writes to output stream
(virtual protected member function)

Example

#include <iostream>
#include <ctime>
#include <iomanip>
#include <codecvt>
 
int main()
{
    std::time_t t = std::time(NULL);
    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

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