Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
my ($first, $last ) = /(.+",)(.+)/; $last =~ s//"\n$first"/g;

I second hdb's reply in general.

Let me add that the
    $last =~ s//"\n$first"/g;
statement from the posted code quoted above is very unlikely to do what you want: it will match the  // null regex pattern globally and do a substitution against what is matched. If there has been a previous successful regex match (e.g., the match in the preceding line), the  // regex matches using the previously matched regex. (If there has been no previous successful regex match, the  // regex matches anything!) As it stands, this substitution seems to be a no-op. If it is part of some carefully thought out strategy, I advise you to abandon it immediately: it has 'maintenance nightmare' written all over it! (In the code example below,  \x22 stands in for an unbalanced  " (double-quote) character.)

>perl -wMstrict -le "$_ = qq{\"ABC\",\"DEF\",\"This is a test\",\"Hello\"}; ;; my ($first, $last ) = /(.+\x22,)(.+)/; print qq{'$last'}; ;; $last =~ s//\"\n$first\"/g; print qq{'$last'}; " '"Hello"' '"Hello"'

In reply to Re^2: regex pattern match by AnomalousMonk
in thread regex pattern match by reaper9187

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others browsing the Monastery: (11)
    As of 2014-12-25 05:51 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      Is guessing a good strategy for surviving in the IT business?





      Results (159 votes), past polls