Rant: Date and Time fall short of simplicity in D

[Kagamin]

On Sunday, 31 March 2013 at 02:39:48 UTC, Steven Schveighoffer 
wrote:
>> And
>> if future-proofing is the issue, then you'll need a 64-bit 
>> system anyway,
>> otherwise the C stuff that you're interacting with wouldn't 
>> work correctly with
>> the larger time_t values.
>
> What C stuff am I interacting with?  Unix Time <=> SysTime 
> conversions are purely D code.
>
> It won't be very long until Unix will have to tackle this 
> (hopefully they don't wait until 2037).  The most likely 
> scenario is they just increase the bits for time_t to 64.  D 
> will be more ready for that with a change to long/ulong for 
> unixTimeToSysTime.

Or they may treat it heuristically. C standard says that time_t 
is implementation defined, so if you want to know which time it 
represents, you should use gmtime function which converts it to 
broken down form - year, month etc.