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Function std.datetime.systime.SysTime.fromUnixTime
Converts from unix time (i.e. seconds from midnight, January 1st, 1970
in UTC) to a SysTime
.
The C standard does not specify the representation of time_t, so it is implementation defined. On POSIX systems, unix time is equivalent to time_t, but that's not necessarily true on other systems (e.g. it is not true for the Digital Mars C runtime). So, be careful when using unix time with C functions on non-POSIX systems.
Parameters
Name | Description |
---|---|
unixTime | Seconds from midnight, January 1st, 1970 in UTC. |
tz | The time zone for the SysTime that's returned. |
Example
import core .time : hours;
import std .datetime .date : DateTime;
import std .datetime .timezone : SimpleTimeZone, UTC;
assert(SysTime .fromUnixTime(0) ==
SysTime(DateTime(1970, 1, 1), UTC()));
auto pst = new immutable SimpleTimeZone(hours(-8));
assert(SysTime .fromUnixTime(28800) ==
SysTime(DateTime(1970, 1, 1), pst));
auto st1 = SysTime .fromUnixTime(1_198_311_285, UTC());
writeln(st1); // SysTime(DateTime(2007, 12, 22, 8, 14, 45), UTC())
assert(st1 .timezone is UTC());
writeln(st1); // SysTime(DateTime(2007, 12, 22, 0, 14, 45), pst)
auto st2 = SysTime .fromUnixTime(1_198_311_285, pst);
writeln(st2); // SysTime(DateTime(2007, 12, 22, 8, 14, 45), UTC())
assert(st2 .timezone is pst);
writeln(st2); // SysTime(DateTime(2007, 12, 22, 0, 14, 45), pst)
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