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 >
zoned_time( TimeZonePtrOrName&& ) -> (3) (since C++20)
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 */>;

These deduction guides 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
std::remove_cvref_t<TimeZonePtrOrName>.