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Defined in header <chrono> | ||
template<class TimeZonePtr> struct zoned_traits{}; | (1) | (since C++20) |
template<> struct zoned_traits<conststd::chrono::time_zone*>; | (2) | (since C++20) |
The classzoned_traits provides a way to customize the behavior of the constructors ofstd::chrono::zoned_time with custom time zone pointer types. In particular, it allows such types to specify the default time zone to use and the mapping of a time zone's name to the corresponding time zone pointer. It is acceptable for custom time zone pointer types to not support either operation, in which case the corresponding constructors ofzoned_time will not participate in overload resolution.
The primary template is empty. A specialization is provided forconststd::chrono::time_zone*, the default time zone pointer type.
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staticconststd::chrono::time_zone* default_zone(); | ||
Returns a time zone pointer for the default time zone (UTC).
std::chrono::locate_zone("UTC").
staticconststd::chrono::time_zone* locate_zone(std::string_view name); | ||
Returns the time zone pointer for the time zone designated byname.
std::chrono::locate_zone(name).
