Your example works, because your routine xxx does nothing special. If you have a routine inside a package however, you will either want to do something with the data contained in your object, or you have a generic function that does not access your object's data.

In the first case you would call the function as kcott mentioned, so as 

$obj -> xxx("hi");

[download]
If you call the function from inside the package, you cannot access the data contained in the object, because you are passing an empty string instead of an object to the function.

If you have a simple function (say, for adding two numbers), you can write a function like you normally would, so without getting the class name from the arguments.

And never call a routine or program test --- there is probably another function or program with that name, which will take you a few hours to find out.

In reply to Re: Calling method inside and outside of package by lyklev
in thread Calling method inside and outside of package by vit

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.