std::chrono::operator<<(std::chrono::file_time)

 

C++

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Date and time utilities

Time point
time_point (C++11)	clock_time_conversion (C++20)	clock_cast (C++20)
Duration
duration (C++11)
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chrono I/O
parse (C++20)
C-style date and time

 

std::chrono::file_clock

Member functions

file_clock::now

file_clock::to_sysfile_clock::from_sys (optional*)

file_clock::to_utcfile_clock::from_utc (optional*)

Time point I/O

operator<<

formatter<std::chrono::file_time>

from_stream

 

Defined in header <chrono>
template< class CharT, class Traits, class Duration > std::basic_ostream<CharT, Traits>&     operator<<( std::basic_ostream<CharT, Traits>& os,                 const std::chrono::file_time<Duration>& tp );		(since C++20)

Outputs tp into the stream os, as if by os << std::format(os.getloc(), STATICALLY-WIDEN("{:L%F %T}"), tp), where STATICALLY_WIDEN<CharT>("{:L%F %T}") is "{:L%F %T}" if CharT is char, and L"{:L%F %T}" if CharT is wchar_t.

Return value

os

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
P2372R3	C++20	the given locale was used by default	L is needed to use the given locale

See also

std::formatter<std::chrono::file_time> (C++20)	formatting support for file_time (class template specialization)
format (C++20)	stores formatted representation of the arguments in a new string (function template)