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No, not all days have 86400 seconds. (Update: Specifically, in places with Daylight Saving Time, some days are longer and some are shorter. The parent's code will result in the calculated date being off by a day when executed during certain hours of the year. )

If you were limited to core Perl, you'd could do something like the following:

use POSIX qw( strftime ); use Time::Local qw( timegm_nocheck ); # Get date. my ($y, $m, $d) = (localtime())[5, 4, 3]; $m += 1; $y += 1900; # Add to date. $d += 14; # Canonize date. ($y, $m, $d) = (gmtime(timegm_nocheck(0,0,0, $d, $m-1, $y)))[5, 4, 3]; $m += 1; $y += 1900; print(strftime("%x", 0,0,0, $d, $m-1, $y-1900), "\n");

Note: I like keeping $y, $m and $d as a human readable numbers. You could shorten the above by leaving $m 0-based and $y 1900-based.

Note: I don't recommend this approach. Take a minute to install one of the date modules.


In reply to Re^2: Adding to a date using Time::localtime by ikegami
in thread Adding to a date using Time::localtime by Anonymous Monk

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    [Corion]: marto: Aah ;) Yeah - I guess I'll make the first changes to the old module, by extending its test suite to be more lenient, and then the switch to the new results should still pass the test suite :-D
    [Corion]: Maybe that's more "boiling a frog", but my toolkit of Machiavellian practices is fairly small

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