What if you want to use sub example not only for $xyz but also $abc, $etc, etc? When i first started perl i would just add another sub with $abc in place of $xyz and things got sloppy very quickly. Then i learned how to pass variables and write much more generalized subroutines.

Like this: 

$xyz = 15;
$abc = 30;

&example($xyz); 
&example($abc);

sub example {
local $var = @_;
$a = $var + 49; 
print $var; 
print $a;
}

[download]
See how elegant that is? Whatever variable you pass to example gets assigned to $var and operated upon.

enjoy - epoptai

In reply to Re: subroutine syntax by epoptai
in thread subroutine syntax 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.