Defined in header <chrono> | ||
|---|---|---|
template <
class Duration,
class TimeZonePtr = const std::chrono::time_zone*
> class zoned_time;
| (since C++20) |
The class zoned_time represents a logical pairing of a time zone and a std::chrono::time_point whose resolution is Duration.
An invariant of zoned_time is that it always refers to a valid time zone and represents an existing and unambiguous time point in that time zone. Consistent with this invariant, zoned_time has no move constructor or move assignment operator; attempts to move a zoned_time will perform a copy.
The program is ill-formed if Duration is not a specialization of std::chrono::duration.
The template parameter TimeZonePtr allows users to supply their own time zone pointer types and further customize the behavior of zoned_time via std::chrono::zoned_traits. Custom time zone types need not support all the operations supported by std::chrono::time_zone, only those used by the functions actually called on the zoned_time.
TimeZonePtr must be MoveConstructible. Move-only TimeZonePtrs are allowed but difficult to use, as the zoned_time will be immovable and it is not possible to access the stored TimeZonePtr.
| Member type | Definition |
|---|---|
duration | std::common_type_t<Duration, std::chrono::seconds> |
constructs a zoned_time (public member function) |
|
assigns value to a zoned_time (public member function) |
|
| obtains a copy of the time zone pointer (public member function) |
|
obtains the stored time point as a local_time (public member function) |
|
obtains the stored time point as a sys_time (public member function) |
|
| obtain information about the time zone at the stored time point (public member function) |
compares two zoned_time objects (function template) |
|
outputs a zoned_time into a stream (function template) |
|
outputs a zoned_time into a stream according to the provided format (function template) |
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