Each module is it's own Namespace.

The "cat" sub is declared in the "my_mod" namespace, and it is NOT in your "dog" script.

The reference needs to be explicit, unless you Export/import the names (a more advanced topic than you probably care for at the moment).

Try calling like this from 'dog":

my_mod::cat();
As you get more familiar with objects, you will probably want to create a "new" sub inside my_mod, and then create an instance of the class inside dog by doing:
my $kitten = new my_mod; $kitten->cat(); # No need to qualify - $kitten already has access to + the my_mod namespace.

     "As you get older three things happen. The first is your memory goes, and I can't remember the other two... " - Sir Norman Wisdom


In reply to Re: module problems by NetWallah
in thread module problems by PerlZealot

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.