Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

Comment on

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

I can think of one reason not yet mentioned: Multi-line shift makes patches more readable. Imagine you have:

sub blah { my $foo = shift; my $bar = shift; }

If I want to add another argument (maybe at this point I should consider hash-based arguments as above, but let's assume I can't, maybe for backwards compatibility), I might rewrite this as:

sub blah { my $foo = shift; my $bar = shift; my $baz = shift; }

The patch to add this argument only contains one additional line with the new argument, making the code easier for people reviewing changes in your version control system or reviewing patches before committing them.

If you change my ($foo, $bar) = @_; to my ($foo, $bar, $baz) = @_; traditional patch/diff output shows one line removed and one added which makes it a little less clear that the change does nothing other than add one new argument.


In reply to Re: shift vs @_ by tomhukins
in thread shift vs @_ by Zadeh

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 making s'mores by the fire in the courtyard of the Monastery: (4)
    As of 2014-08-31 09:35 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The best computer themed movie is:











      Results (294 votes), past polls