Re: Ada case-statement

["Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>]

On 03/18/2018 06:41 AM, Robert I. Eachus wrote:
>>
> Ada 83 has a known Doom Date of December 31, 2099.  It has since been updated to 
> 2399, so don't get too worried.  Actually, the beginning of Ada time 1901, isn't 
> perfect.  Some countries Russia, Turkey, and Greece in particular used the 
> Julian calendar into the early 20th century.  It just didn't make sense for Ada 
> to worry about THAT particular problem.

2099 seemed like a reasonable value for Year_Number'Last at the time. Still 
does, for most things. Better than 1999.

> In the other direction, even the Gregorian calendar isn't perfect and a leap day 
> will need to be skipped every few thousand years.  Probably either Feb. 29th, 
> 3000 or Feb. 29th, 4000 won't occur.  My guess is that the latter date will win 
> out. When it starts to become an issue in the late thirtieth century, it will be 
> easier to put it off for another thousand years.  (I just hope I'm around to see 
> it. ;-)

I'd bet on 4000, since 3000 isn't a leap year. I'd like to be around to see it, too.

-- 
Jeff Carter
"Insufficient laughter--that's grounds for divorce."
Play It Again, Sam
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