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)