unix time will need a wrapper for strong typing
struct UnixTime { int value; }
SysTime toSysTime(UnixTime fromValue, TimeZone zone=Utc)
{ return SysTime(unixTimeToStdTime(fromValue.value), zone); }
so conversion is
return UnixTime(d.when.time).toTime!DateTime;
may be it can be reduced to
return to!DateTime(UnixTime(d.when.time));
For primitive types one may have functions which convert directly
to SysTime instead of wrappers, this will also enable overloading
if someone uses wider types with the same semantics.
SysTime unixTime(time_t fromValue, TimeZone zone=Utc)
{ return SysTime(unixTimeToStdTime(fromValue), zone); }
return unixTime(d.when.time).toTime!DateTime;
strongly typed time formats with defined conversion method to and
from SysTime will be just
FILETIME ft;
return ft.toTime!DateTime;
