std::chrono::time_of_day

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C-style date and time

std::chrono::time_of_day

Member functions

time_of_day::time_of_day

time_of_day::hourstime_of_day::minutestime_of_day::secondstime_of_day::subseconds

time_of_day::operator precisiontime_of_day::to_duration

time_of_day::make12time_of_day::make24

Non-member functions

operator<<

Defined in header <chrono>
template< class Duration > class time_of_day; // not defined	(1)	(since C++20)
template<> class time_of_day<std::chrono::hours>;	(2)	(since C++20)
template<> class time_of_day<std::chrono::minutes>;	(3)	(since C++20)
template<> class time_of_day<std::chrono::seconds>;	(4)	(since C++20)
template< class Rep, class Period > class time_of_day<std::chrono::duration<Rep, Period>>;	(5)	(since C++20)

The class template time_of_day splits a std::chrono::duration representing time since midnight into a "broken down" time such as hours:minutes:seconds, with the precision of the split determined by the Duration template parameter. It also tracks whether it should be output in a 12-hour time format or a 24-hour time format. It is primarily a formatting tool.

The primary template (1) is not defined; four specializations are provided to handle four different levels of precision.

Each specialization of time_of_day is a TriviallyCopyable StandardLayoutType.

The partial specialization (5) only exists if std::chrono::treat_as_floating_point_v<Rep> is false and std::chrono::duration<Rep, Period> is not convertible to std::chrono::seconds.

Member types

Member type	Definition
precision	Duration

Member functions

(constructor)	constructs a time_of_day (public member function)
hoursminutessecondssubseconds	accesses components of the broken-down time (public member function)
operator precisionto_duration	accesses the stored std::chrono::duration (public member function)
make12make24	changes the time format used for output (public member function)

Nonmember functions

operator<<

outputs a time_of_day into a stream (function template)