SysTime comparesin - dropMiliseconds

[Jonathan M Davis]

On Sunday, August 12, 2018 1:50:44 PM MDT User via Digitalmars-d-learn 
wrote:
> I have to synchronize a directory. If remote file is newer I copy
> to local. If local file is newer I copy it to remote server. For
> some reason remote timestamp does not contain milliseconds, so
> comparison (localFileTime < remoteFileTime, etc) fails. I need
> help to drop milliseconds from local file timestamp.

If you want to drop the milliseconds from a SysTime, you can always set its
fracSecs to Duration.zero. e.g.

st1.fracSecs = Duration.zero;
if(st1 < st2)
{
    ...
}

You could also cast the two SysTimes to DateTime and compare the result
(since DateTime doesn't have fractional seconds), but you'd probably want to
use toUTC() to ensure that the SysTimes had the same time zone when
converting, or you'd risk subtle bugs. e.g. something like

if(cast(DateTime)st1.toUTC() < cast(DatetTime)st2.toUTC())
{
    ...
}

- Jonathan M Davis