namespace std::chrono {
class time_zone {
public:
time_zone(time_zone&&) = default;
time_zone& operator=(time_zone&&) = default;
string_view name() const noexcept;
template<class Duration> sys_info get_info(const sys_time<Duration>& st) const;
template<class Duration> local_info get_info(const local_time<Duration>& tp) const;
template<class Duration>
sys_time<common_type_t<Duration, seconds>>
to_sys(const local_time<Duration>& tp) const;
template<class Duration>
sys_time<common_type_t<Duration, seconds>>
to_sys(const local_time<Duration>& tp, choose z) const;
template<class Duration>
local_time<common_type_t<Duration, seconds>>
to_local(const sys_time<Duration>& tp) const;
};
}
A
time_zone represents all time zone transitions
for a specific geographic area
.time_zone construction is unspecified,
and performed as part of database initialization
. [
Note 1:
const time_zone objects can be accessed
via functions such as
locate_zone. —
end note]