std::chrono::zoned_time::zoned_time

 

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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();	(1)	(since C++20)
zoned_time(const std::chrono::sys_time<Duration>& st);	(2)	(since C++20)
zoned_time(const zoned_time& other) = default;	(3)	(since C++20)
template< class Duration2 > zoned_time(const std::chrono::zoned_time<Duration2, TimeZonePtr>& other);	(4)	(since C++20)
explicit zoned_time(TimeZonePtr z);	(5)	(since C++20)
explicit zoned_time(std::string_view name);	(6)	(since C++20)
zoned_time(TimeZonePtr z, const std::chrono::sys_time<Duration>& st);	(7)	(since C++20)
zoned_time(std::string_view name, const std::chrono::sys_time<Duration>& st);	(8)	(since C++20)
zoned_time(TimeZonePtr z, const std::chrono::local_time<Duration>& tp);	(9)	(since C++20)
zoned_time(std::string_view name, const std::chrono::local_time<Duration>& tp);	(10)	(since C++20)
zoned_time(TimeZonePtr z, const std::chrono::local_time<Duration>& tp,            std::chrono::choose c);	(11)	(since C++20)
zoned_time(std::string_view name, const std::chrono::local_time<Duration>& tp,            std::chrono::choose c);	(12)	(since C++20)
template< class Duration2, class TimeZonePtr2 > zoned_time(TimeZonePtr z, const std::chrono::zoned_time<Duration2, TimeZonePtr2>& zt);	(13)	(since C++20)
template< class Duration2, class TimeZonePtr2 > zoned_time(TimeZonePtr z, const std::chrono::zoned_time<Duration2, TimeZonePtr2>& zt, choose);	(14)	(since C++20)
template< class Duration2, class TimeZonePtr2 > zoned_time(std::string_view name, const std::chrono::zoned_time<Duration2, TimeZonePtr2>& zt);	(15)	(since C++20)
template< class Duration2, class TimeZonePtr2 > zoned_time(std::string_view name, const std::chrono::zoned_time<Duration2, TimeZonePtr2>& zt, choose);	(16)	(since C++20)

Constructs a zoned_time object, initializing the stored time zone pointer and time point according to the following table, where traits is std::chrono::zoned_traits<TimeZonePtr>:

Overload	Time zone pointer (denoted zone)	Time point (a std::chrono::sys_time<duration>)	Notes
(1)	traits::default_zone()	default constructed	(a)
(2)		st
(3)	other.get_time_zone()	other.get_sys_time()	(b)
(4)	other.get_time_zone()	other.get_sys_time()	(e)
(5)	std::move(z)	default constructed
(6)	traits::locate_zone(name)		(c)
(7)	std::move(z)	st
(8)	traits::locate_zone(name)		(c)
(9)	std::move(z)	zone->to_sys(tp)	(d)
(10)	traits::locate_zone(name)		(c,d)
(11)	std::move(z)	zone->to_sys(tp, c)	(d)
(12)	traits::locate_zone(name)		(c,d)
(13-14)	std::move(z)	zt.get_sys_time()	(e)
(15-16)	traits::locate_zone(name)		(c,e)

a) Constructors specified to call traits::default_zone() (1-2) do not participate in overload resolution if that expression is not well-formed.

b) The defaulted copy constructor (3) is defined as deleted if std::is_copy_constructible_v<TimeZonePtr> is false.

c) Constructors with a std::string_view parameter name (6,8,10,12,15-16) do not participate in overload resolution if traits::locate_zone(name) is not well-formed or if that expression is not convertible to TimeZonePtr.

d) Constructors specified to call zone->to_sys (9-12) do not participate in overload resolution if that call expression is not well-formed or if the result is not convertible to std::chrono::sys_time<duration>.

e) Constructors with a template parameter Duration2 (4,13-16) do not participate in overload resolution if Duration2 is not convertible to Duration.

The behavior is undefined if the time zone pointer (initialized as described above) does not refer to a time zone.

Notes

zoned_time does not have a move constructor and attempting to move one will perform a copy instead using the defaulted copy constructor (3). Thus, when TimeZonePtr is a move-only type, zoned_time is immovable: it can be neither moved nor copied.

The constructors (14,16) accept a std::chrono::choose parameter, but that parameter has no effect.