std::chrono:: choose

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Date and time utilities

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(C++11)

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nonexistent_local_time (C++20)
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locate_zone (C++20)
current_zone (C++20)
time_zone (C++20)
choose (C++20)

zoned_traits (C++20)
zoned_time (C++20)
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leap_second (C++20)
leap_second_info (C++20)
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                chrono

I/O

parse

(C++20)

C-style date and time

Defined in header `<chrono>`
enum class choose { earliest, latest } ;		(since C++20)

The scoped enumeration choose can be passed to certain member functions of std::chrono::time_zone and std::chrono::zoned_time to control how ambiguous or nonexistent local times should be resolved. Passing choose::earliest causes the earlier time point to be returned, while passing choose::latest causes the later time point to be returned. (For nonexistent local times, these two time points are identical.)

If a choose is not passed and an ambiguous or nonexistent local time is encountered, a std::chrono::ambiguous_local_time or std::chrono::nonexistent_local_time exception (as applicable) will be thrown.

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External libraries

(constructor)	constructs a `zoned_time` (public member function of `std::chrono::zoned_time<Duration,TimeZonePtr>` )
to_sys	converts a local_time in this time zone to a sys_time (public member function of `std::chrono::time_zone` )

std::chrono:: choose

See also

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