I ran this and it works, but I am not sure I understand why.
  1. 'd+' is one or more digits. The 'g' option causes the regex to find all greedy matches of d+, which is, say, '2001', '02' and '14'.
  2. The regex returns a list of these finds.
  3. 'shift =~' causes the regex to read as input the first parameter sent to the changedate function.
  4. join and reverse are as usual.
  5. Finally, even though there is no explicit return in the sub, it by default returns the last value calculated, which is the the value returned by join.
Wow! Is Perl powerful or what? I am in awe of Larry and the Perl 5 Porters who wrote it.

In reply to Re: (dkubb) Re: (2) Split by sierrathedog04
in thread How do I use Split by fastkeys

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.