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Re: days between dates

by Ratazong (Monsignor)
on Mar 15, 2013 at 14:27 UTC ( #1023710=note: print w/replies, xml ) Need Help??


in reply to days between dates

Hi!

If you are doing date-calculations, I strongly recommend not to re-invent the wheel, but to use a standard module. I have very good experiences with Date::Calc, which provides a function called Delta_Days. And which is consistent on any platform.

use Date::Calc qw (Delta_Days); print Delta_Days (1904,1,1, 2013,3,5) + 1462 , "\n";

HTH, Rata

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[james28909]: in need "yesterday" and so on, to be absolute like "1" or "31"
[stevieb]: ...and throw some of your existing code into the equation as well, just so readers know you've given a try at it ;)
[james28909]: ok
[stevieb]: davido thanks for the link ;) I was being the typical lazy
[davido]: date parsing is hard. The more examples you can provide of the input (within reason) and expected output, the better.
[stevieb]: agreed. That's why I said at least a half-dozen. If enough of the different formats are present, the date/time folk may not have to request more. If they do, then at least there was a decent base to start with
[stevieb]: I do date and time transformations in both Perl and Python, but not frequently enough to not have to search for the format params etc ;)

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