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Re^3: Getting previous dates from the current date

by Kanji (Parson)
on Mar 29, 2005 at 18:18 UTC ( #443216=note: print w/replies, xml ) Need Help??

in reply to Re^2: Getting previous dates from the current date
in thread Getting previous dates from the current date

Rather than time(), I'd suggest using...

use Time::Local; my $time = timelocal(0, 0, 12, (localtime)[3, 4, 5]);

This'll make midday your starting point for calculations, which helps sidestep the whole daylight savings issue Smylers pointed out.

As an added bonus, Time::Local is also part of the core distribution, so you don't need to install anything via CPAN (which is good, as some of those other more fancy Date:: modules are mighty bloaty!).


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[GrandFather]: discovering that one of the sensors for the device lies about the gain range it is using!
[GrandFather]: However, by the end of the day I had discovered its deceptions and now have it working correctly, so yes, all's well that ends well. :-D
[Corion]: GrandFather: Ah, (hardware) APIs - I have a similar situation with Chrome and its API... It is fairly underdocumented and I guess I have to hunt...
[Corion]: ... down supposedly working code to find out what I'm supposed to do
[GrandFather]: I haven't any "working code" to inspect! I have to find ways to generate reference signals then check the numbers I get at the far end match.
[GrandFather]: That's ok when the signal is a voltage, but there are three axis accelerometers, gyroscopes and magnetometers in these things! A little invention is needed at times!
[Corion]: GrandFather: Yeah, in that aspect, hardware is far more a black box than software
[GrandFather]: Oh, and the manufacturer tells lies too! I'm sure they don't mean to, but I know for sure some of the stuff they say is just wrong. It's possible they don't understand what we are asking, but that's not a good look either
[Corion]: GrandFather: Ah, unit testing hardware is fun, especially when the hardware is uncalibrated ...

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