|Perl: the Markov chain saw|
Epoch Day Question. Also, EzDate vs DateTimeby tphyahoo (Vicar)
|on Aug 03, 2006 at 14:13 UTC||Need Help??|
tphyahoo has asked for the
wisdom of the Perl Monks concerning the following question:
I have a bunch of dates attached to trending information (widgets purchased), and I need to transform them into numbers so that I can do a valid comparison to detect trends.
(See Calculating your basic $constant, $slope, and $error terms for a time series distribution if you're curious, although the specifics don't really matter for this particular question)
To sum it up, I think I need a way to get an "Epoch Day" from a date.
It seems like Date::EzDate does this. However, I'm used to using DateTime, and feel a little silly making the switch for such a seemingly niggly little thing. So, before I start learning and using EzDate, is there a way to accomplish the same thing in a simple way using DateTime?
This also seems like an opportune venue to ask monks who have used both modules if they are aware of any issues / advantages, with either. I have to say, until now, DateTime has served me well. And it appears to have more name recognition, and is being actively maintained. (EzDate hasn't had any changes since 2003... but maybe that just means it works really darned well?) Anyway, I am sure EzDate has its fans as well.
Thanks for your help!
UPDATE: Come to think of it, I'm pretty sure this can be done with DateTime, which comes with *at least* a function to fetch number of epoch seconds. So, could transform this into days using arithmetic I suppose... working this through...