I haven't used something like that before, but I can see another way to accomplish the same thing. But I have no idea which one is the 'best'... (nor do I know if it works for the full 100%, I only did some basic testing)

Create a package to which you can tie a hash, add the restrictions/additions to in the STORE/FETCH method.

Now you could tie a hash in your new-function to that package, and return a blessed reference to the tied hash.

Now you could access the attributes as $self->{'attr'}, and the addition(s) as $self->{'rand120'} (for example ofc).

Have you considered using this/a similar technique?

(Note, I know that this wasn't your question but I thought it could be relevant/useful so I posted it...)

In reply to Re: Blessing subrefs by Animator
in thread Blessing subrefs by blazar

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.