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std::chrono::utc_clock

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C
 
std::chrono::utc_clock
 
<tbody> </tbody>
class utc_clock;
 ( C++20)

std::chrono::utc_clock Clock, (UTC). 00:00:00 UTC, , 1 1970 , .

utc_clock Clock. TrivialClock, , now() .

<tbody> </tbody>
std::chrono
template<class Duration> using utc_time = std::chrono::time_point<std::chrono::utc_clock, Duration>;
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using utc_seconds = utc_time<std::chrono::seconds>;
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 utc_time
( ) []
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 utc_time
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 utc_time
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rep ,
period std::ratio,
duration std::chrono::duration<rep, period>,
time_point std::chrono::time_point<std::chrono::utc_clock>

constexpr bool is_steady
[static]
 true, , .. now() , , false
(public static -)

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[static]
 std::chrono::time_point,
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[static]
 utc_time sys_time
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[static]
 sys_time utc_time
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,

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 utc_time
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UTC 1 1972 . utc_clock 1 1970 , std::chrono::system_clock.

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