On Nov 17, 2011, at 10:33 AM, Tedd Sperling <tedd.sperling@xxxxxxxxx>
wrote:
On Nov 17, 2011, at 11:07 AM, Stuart Dallas wrote:
On 17 Nov 2011, at 16:01, Tedd Sperling wrote:
To all:
Okay, so now that we have had people reply, here's my take.
The Unix timestamp started on 01 Jan 1970 00:00:00 +0000 -- and
that was a Thursday.
The second before (i.e., 31 December, 1969 23:59:59:59 + 0000) was
null, which was Wednesday.
I take issue with this. The second before was -1 seconds from the
epoch. Null is the absence of a value, so you can't get to null by
simple arithmetic. I learnt about negative numbers from the Greeks.
And no, I'm not going to comment on their current mathematical
difficulties.
Hmm.
D'oh!
But the point still stands: -1 !== null.
-Stuart
Leave it to you to get all Greek on me. :-)
Consider this -- do you think the second before the "Big Bang" was
negative or null?
Likewise, the Unix timestamp was defined to start at a specific
point in time -- it does not address/define what time came before.
Thus, what came before was not negative, but rather 'undefined'. I
claim 'null' is a better fit for 'undefined' than negative -- plus
it works.
For example, if you push '-1' though strtotime(-1), you'll get
Wednesday only one day a week -- whereas 'null' works every time.
My point stands: null == Wednesday. :-)
Cheers,
tedd
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As I clearly demonstrated, that depends on where you're standing :)
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