Corion has listed the "usual suspects". Basically if you want to do date math efficiently with dates that are within the past ~century, this requires a trip to "epoch" time. Unix has a time for this and Macintosh O/S has another time. What this amounts to is generating an integer number of seconds that is plus/minus from the epoch date/time. You convert date/time strings into this integer value and then add/subtract a number of seconds from this "epoch based" value and then convert that integer back to a string.

If you just want to compare or sort date/times without going through this conversion hassle, I would advise using a format like: 2010-05-12 (YYYY-MM-DD). Leading zero'es are important! A string sort of dates like that will yield the correct order. So that is how to do compares and sorts of dates. For calculations using dates, see above.

In reply to Re: Comparing and increamenting dates in Perl by Marshall
in thread Comparing and increamenting dates in Perl by paragkalra

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