Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

i have changed my regular expression style significantly as of late. my list of reasons includes training regex newbies and preparing for perl 6.

here are some of the changes

  • never use a bare regex: // is always written as m//
  • always use the x modifier, and put it up front (more like perl6):
    m/(?x) ((?:blah){3}) ## match w/ capture: blahblahblah /
  • replace all ^ and $ anchors with the safer \A and \z. once bitten, twice shy ;)
    if i read the apocalypses correctly, perl 6's ^ and $ anchors will DWIM better than the current implementation

my take on your regexes might go something like:

... =~ m/(?x) \A ## match w/ capture: one or more alpha, punct, or space posix charac +ters ( [[:alpha:][:punct:][:space:]]+ ) \z /; ## and ... =~ m/(?x) \A ## match w/capture: one or more alpha posix characters ( [[:alpha:]]+ ) \z /;

the comments are a little verbose. i'd consider them extraneous for this example, but neccessary in more complex patterns.

~Particle *accelerates*


In reply to Re: "Correct" program style questions by particle
in thread "Correct" program style questions by Ovid

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
  • 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.
  • 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 pondering the Monastery: (4)
    As of 2015-07-28 06:56 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (252 votes), past polls