I really don't understand why people insist on reaching for Date::Foo modules so quickly. Both Date::Calc and (especially) Date::Manip are overkill for this problem.

To get the time two weeks ago, simply subtract the relevant number of seconds from the current time. You can then convert that into a human-readable value using localtime or (even easier) POSIX::strftime.

use POSIX 'strftime'; my $then = time - (14 * 24 * 60 * 60); my $date = strftime ('%Y%m%d', localtime $then); print $date; # prints 20020524

You can easily change the format of the date returned by changing the format string passed to strftime.

If you simply must use a CPAN module, then take a look at Time::Piece.

use Time::Piece; use Time::Seconds; my $now = localtime; # Now a Time::Piece object my $then = $now - (14 * ONE_DAY); print $then->ymd; # or various other output functions
--
<http://www.dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg


In reply to Re: Subtracting Dates by davorg
in thread Subtracting Dates by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.