std::chrono::current_zone

 

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Date and time library

Time point time_point (C++11) clock_time_conversion (C++20)   clock_cast (C++20) Duration duration (C++11) Clocks system_clock (C++11) steady_clock (C++11) is_clock (C++20) utc_clock (C++20) tai_clock (C++20) high_resolution_clock (C++11) gps_clock (C++20) file_clock (C++20) local_t (C++20) Time of day is_amis_pm (C++20)(C++20) make12make24 (C++20)(C++20) hh_mm_ss (C++20)

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Time zone tzdb (C++20) tzdb_list (C++20) get_tzdbget_tzdb_listreload_tzdbremote_version (C++20)(C++20)(C++20)(C++20) sys_info (C++20) local_info (C++20) nonexistent_local_time (C++20) ambiguous_local_time (C++20) locate_zone (C++20) current_zone (C++20) time_zone (C++20) choose (C++20) zoned_traits (C++20) zoned_time (C++20) time_zone_link (C++20) leap_second (C++20) leap_second_info (C++20) get_leap_second_info (C++20) C-style date and time

 

Defined in header <chrono>
const std::chrono::time_zone* current_zone();		(since C++20)

Convenience function for obtaining local time zone from the time zone database. Equivalent to std::chrono::get_tzdb().current_zone().

Exceptions

std::runtime_error if this is the first reference to the time zone database and the time zone database cannot be initialized.

Notes

A call to this function that is the first reference to the time zone database will cause it to be initialized.

Example

Run this code

#include <chrono>
#include <iostream>
 
int main()
{
    try
    {
        const std::chrono::zoned_time cur_time
        {
            std::chrono::current_zone(), / may throw
            std::chrono::system_clock::now()
        };
        std::cout << cur_time << '\n';
    }
    catch(const std::runtime_error& ex)
    {
        std::cerr << ex.what() << '\n';        
    }
}

Possible output:

2021-09-13 19:46:42.249182012 MAGT

See also

current_zone	return the local time zone (public member function of std::chrono::tzdb)
get_tzdbget_tzdb_listreload_tzdbremote_version (C++20)	accesses and controls the global time zone database information (function)

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