$ref = @_;

Sorry, but that's not correct, it suffers from the same problem as the OP: it puts the array @_ into scalar context, meaning that $ref will hold the number of elements in @_, instead of its first element as intended. You'd need to write my ($ref) = @_;, as the parentheses on the left side place the right side into list context, and this will cause $ref to be assigned the first element of the array (and the rest of the elements to be ignored in this case).

Also, this code won't work under strict (also note $reference_of_example vs. $ref_example). When posting code examples, please make sure to test them under strict and warnings.


In reply to Re^2: Passing a hash byreference to a subroutine by haukex
in thread Passing a hash byreference to a subroutine by edimusrex

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.