Deduction guides for std::chrono::zoned_time

 

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Time zones
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C-style date and time

 

std::chrono::zoned_time

Member functions

zoned_time::zoned_time

zoned_time::operator=

zoned_time::get_time_zone

zoned_time::get_sys_timezoned_time::operator sys_time

zoned_time::get_local_timezoned_time::operator local_time

zoned_time::get_info

Nonmember functions

operator==operator!=

operator<<

to_stream

Deduction guides

 

zoned_time() -> zoned_time<std::chrono::seconds>;	(1)	(since C++20)
template< class Duration > zoned_time(std::chrono::sys_time<Duration>)     -> zoned_time<std::common_type_t<Duration, std::chrono::seconds>>;	(2)	(since C++20)
template< class TimeZonePtrOrName > zoned_time(TimeZonePtrOrName) -> zoned_time<std::chrono::seconds, /* see below */>;	(3)	(since C++20)
template< class TimeZonePtrOrName, class Duration > zoned_time(TimeZonePtrOrName, std::chrono::sys_time<Duration>)     -> zoned_time<std::common_type_t<Duration, std::chrono::seconds>, /* see below */>;	(4)	(since C++20)
template< class TimeZonePtrOrName, class Duration > zoned_time(TimeZonePtrOrName, std::chrono::local_time<Duration>,            std::chrono::choose = std::chrono::choose::earliest)     -> zoned_time<std::common_type_t<Duration, std::chrono::seconds>, /* see below */>;	(5)	(since C++20)
template< class TimeZonePtrOrName, class Duration, class TimeZonePtr2 > zoned_time(TimeZonePtrOrName, std::chrono::zoned_time<Duration, TimeZonePtr2>,            std::chrono::choose = std::chrono::choose::earliest)     -> zoned_time<std::common_type_t<Duration, std::chrono::seconds>, /* see below */>;	(6)	(since C++20)

Six deduction guides are provided for zoned_time. They normalize Duration to a minimum resolution of std::chrono::seconds, and provide correct handling for time zone names specified using types convertible to std::string_view.

3-6) If std::is_convertible_v<TimeZonePtrOrName, std::string_view> is true, the deduced second template argument is const std::chrono::time_zone*. Otherwise it is TimeZonePtrOrName.