Re: [Boost-users] convert separate year, month, day, hour, minute, secs, ms to milliseconds since epoch

Subject: Re: [Boost-users] convert separate year, month, day, hour, minute, secs, ms to milliseconds since epoch
From: degski (degski_at_[hidden])
Date: 2019-03-05 09:06:32

On Tue, 5 Mar 2019 at 10:39, Leon Mlakar via Boost-users <
boost-users_at_[hidden]> wrote:

> Behid the question was my, obviously incorrect, assumption that olde
> visual studio versions, from times when c++20 was not yet conceived and
> epoch thus not set to Jan 1 AD 1970, are using some different epoch - as
> Microsoft frequently did, like Jan 1 AD 1 (.NET),  Jan 1 AD 1601 (NTFS),
>
MS just implements the standard [in this case] and for timings within
Windows (i..e. Windows.h), they have the FILETIME API, " Jan 1 AD 1
(.NET),  Jan 1 AD 1601 (NTFS)", etc (possibly because they realized the
world was not created in 1970, but heck who knows).

> Jan 1 AD 1980 (DOS, FAT family of file systems). So seeing Microsoft
> embracing a standard thing like posix epoch without screaming and kicking
> is a nice surprise.
>
Well at the time of DOS, there was no std, so one could forgive them (on
this occasion) to not implement it correctly.

degski
-- 
*"Big boys don't cry" - **Eric Stewart, Graham Gouldman*