Deductionguidesforstd::chrono::zoned_time (3) - Linux Manuals

Deductionguidesforstd::chrono::zoned_time: Deductionguidesforstd::chrono::zoned_time

NAME

Deductionguidesforstd::chrono::zoned_time - Deductionguidesforstd::chrono::zoned_time

Synopsis

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

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.