std::chrono::zoned_time<Duration,TimeZonePtr>::zoned_time
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) |
traits::default_zone() (1-2) do not participate in overload resolution if that expression is not well-formed.std::is_copy_constructible_v<TimeZonePtr> is false.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.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>.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.
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